Remove support for building on the 1.4 branch on the bots.

We did not see any commits on this branch since May and 1.5 is going stable now.

Change-Id: I37b40183a67de772936be0a72bef980089be89d9
diff --git a/infra/config/global/cr-buildbucket.cfg b/infra/config/global/cr-buildbucket.cfg
index eda0964..10a7426 100644
--- a/infra/config/global/cr-buildbucket.cfg
+++ b/infra/config/global/cr-buildbucket.cfg
@@ -128,59 +128,6 @@
 
     }
     builders {
-      name: "d8-linux-android-4.0.4_release"
-      mixins: "linux"
-      mixins: "normal"
-      recipe {
-        properties: "tool:d8"
-        properties: "dex_vm:4.0.4"
-      }
-    }
-    builders {
-      name: "d8-linux-android-4.4.4_release"
-      mixins: "linux"
-      mixins: "normal"
-      recipe {
-        properties: "tool:d8"
-        properties: "dex_vm:4.4.4"
-      }
-    }
-    builders {
-      name: "d8-linux-android-5.1.1_release"
-      mixins: "linux"
-      mixins: "normal"
-      recipe {
-        properties: "tool:d8"
-        properties: "dex_vm:5.1.1"
-      }
-    }
-    builders {
-      name: "d8-linux-android-6.0.1_release"
-      mixins: "linux"
-      mixins: "normal"
-      recipe {
-        properties: "tool:d8"
-        properties: "dex_vm:6.0.1"
-      }
-    }
-    builders {
-      name: "d8-linux-android-7.0.0_release"
-      mixins: "linux"
-      mixins: "normal"
-      recipe {
-        properties: "tool:d8"
-        properties: "dex_vm:7.0.0"
-      }
-    }
-    builders {
-      name: "d8-linux_release"
-      mixins: "linux"
-      mixins: "normal"
-      recipe {
-        properties: "tool:d8"
-      }
-    }
-    builders {
       name: "linux"
       mixins: "linux"
       mixins: "normal"
diff --git a/infra/config/global/luci-milo.cfg b/infra/config/global/luci-milo.cfg
index a4ee962..42ee7f0 100644
--- a/infra/config/global/luci-milo.cfg
+++ b/infra/config/global/luci-milo.cfg
@@ -146,36 +146,6 @@
     short_name: "jctf"
   }
   builders {
-    name: "buildbucket/luci.r8.ci/d8-linux_release"
-    category: "D8 release"
-    short_name: "Linux"
-  }
-  builders {
-    name: "buildbucket/luci.r8.ci/d8-linux-android-4.0.4_release"
-    category: "D8 release"
-    short_name: "4.0.4"
-  }
-  builders {
-    name: "buildbucket/luci.r8.ci/d8-linux-android-4.4.4_release"
-    category: "D8 release"
-    short_name: "4.4.4"
-  }
-  builders {
-    name: "buildbucket/luci.r8.ci/d8-linux-android-5.1.1_release"
-    category: "D8 release"
-    short_name: "5.1.1"
-  }
-  builders {
-    name: "buildbucket/luci.r8.ci/d8-linux-android-6.0.1_release"
-    category: "D8 release"
-    short_name: "6.0.1"
-  }
-  builders {
-    name: "buildbucket/luci.r8.ci/d8-linux-android-7.0.0_release"
-    category: "D8 release"
-    short_name: "7.0.0"
-  }
-  builders {
     name: "buildbucket/luci.r8.ci/windows_release"
     category: "win release"
     short_name: "win"
diff --git a/infra/config/global/luci-notify.cfg b/infra/config/global/luci-notify.cfg
index dea08cd..a3dd898 100644
--- a/infra/config/global/luci-notify.cfg
+++ b/infra/config/global/luci-notify.cfg
@@ -24,36 +24,6 @@
     repository: "https://r8.googlesource.com/r8"
   }
   builders {
-    name: "d8-linux-android-4.0.4_release"
-    bucket: "ci"
-    repository: "https://r8.googlesource.com/r8"
-  }
-  builders {
-    name: "d8-linux-android-4.4.4_release"
-    bucket: "ci"
-    repository: "https://r8.googlesource.com/r8"
-  }
-  builders {
-    name: "d8-linux-android-5.1.1_release"
-    bucket: "ci"
-    repository: "https://r8.googlesource.com/r8"
-  }
-  builders {
-    name: "d8-linux-android-6.0.1_release"
-    bucket: "ci"
-    repository: "https://r8.googlesource.com/r8"
-  }
-  builders {
-    name: "d8-linux-android-7.0.0_release"
-    bucket: "ci"
-    repository: "https://r8.googlesource.com/r8"
-  }
-  builders {
-    name: "d8-linux_release"
-    bucket: "ci"
-    repository: "https://r8.googlesource.com/r8"
-  }
-  builders {
     name: "linux"
     bucket: "ci"
     repository: "https://r8.googlesource.com/r8"
diff --git a/infra/config/global/luci-scheduler.cfg b/infra/config/global/luci-scheduler.cfg
index 8d26458..525bb2e 100644
--- a/infra/config/global/luci-scheduler.cfg
+++ b/infra/config/global/luci-scheduler.cfg
@@ -55,43 +55,17 @@
   triggers: "linux-android-5.1.1_release"
   triggers: "linux-android-6.0.1_release"
   triggers: "linux-android-7.0.0_release"
-  triggers: "linux-internal_release"
-  triggers: "linux-jctf_release"
-  triggers: "linux_release"
-}
-
-
-# The need for d8 specific bots was removed in 1.5, only trigger on 1.4.
-trigger {
-  id: "1.4-branch-gitiles-trigger"
-  acl_sets: "default"
-  gitiles: {
-    repo: "https://r8.googlesource.com/r8"
-    refs: "regexp:refs/heads/d8.1.4"
-  }
-  triggers: "d8-linux-android-4.0.4_release"
-  triggers: "d8-linux-android-4.4.4_release"
-  triggers: "d8-linux-android-5.1.1_release"
-  triggers: "d8-linux-android-6.0.1_release"
-  triggers: "d8-linux-android-7.0.0_release"
-  triggers: "d8-linux_release"
-}
-
-# These bots don't work until 1.5
-trigger {
-  id: "1.5-branch-gitiles-trigger"
-  acl_sets: "default"
-  gitiles: {
-    repo: "https://r8.googlesource.com/r8"
-    refs: "regexp:refs/heads/d8.1.5"
-  }
   triggers: "linux-android-8.1.0_release"
   triggers: "linux-android-9.0.0_release"
+  triggers: "linux-internal_release"
+  triggers: "linux-jctf_release"
   triggers: "linux-run-on-as-app_release"
+  triggers: "linux_release"
   triggers: "r8cf-linux-jctf_release"
   triggers: "windows_release"
 }
 
+
 job {
   id: "archive"
   acl_sets: "default"
@@ -120,66 +94,6 @@
 }
 
 job {
-  id: "d8-linux-android-4.0.4_release"
-  acl_sets: "default"
-  buildbucket {
-    server: "cr-buildbucket.appspot.com"
-    bucket: "luci.r8.ci"
-    builder: "d8-linux-android-4.0.4_release"
-  }
-}
-
-job {
-  id: "d8-linux-android-4.4.4_release"
-  acl_sets: "default"
-  buildbucket {
-    server: "cr-buildbucket.appspot.com"
-    bucket: "luci.r8.ci"
-    builder: "d8-linux-android-4.4.4_release"
-  }
-}
-
-job {
-  id: "d8-linux-android-5.1.1_release"
-  acl_sets: "default"
-  buildbucket {
-    server: "cr-buildbucket.appspot.com"
-    bucket: "luci.r8.ci"
-    builder: "d8-linux-android-5.1.1_release"
-  }
-}
-
-job {
-  id: "d8-linux-android-6.0.1_release"
-  acl_sets: "default"
-  buildbucket {
-    server: "cr-buildbucket.appspot.com"
-    bucket: "luci.r8.ci"
-    builder: "d8-linux-android-6.0.1_release"
-  }
-}
-
-job {
-  id: "d8-linux-android-7.0.0_release"
-  acl_sets: "default"
-  buildbucket {
-    server: "cr-buildbucket.appspot.com"
-    bucket: "luci.r8.ci"
-    builder: "d8-linux-android-7.0.0_release"
-  }
-}
-
-job {
-  id: "d8-linux_release"
-  acl_sets: "default"
-  buildbucket {
-    server: "cr-buildbucket.appspot.com"
-    bucket: "luci.r8.ci"
-    builder: "d8-linux_release"
-  }
-}
-
-job {
   id: "linux"
   acl_sets: "default"
   triggering_policy: {