Don't include kotlin module files in distribution.

Bug: 123310328
Change-Id: Ie70d4b15f08ffc0e7b754c558079002bd6a84334
diff --git a/build.gradle b/build.gradle
index 33d967f..5606a9e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -567,6 +567,7 @@
     from repackageSources.outputs.files
     from repackageDeps.outputs.files
     configureRelocations(it)
+    exclude "META-INF/*.kotlin_module"
 }
 
 task r8WithoutDeps(type: ShadowJar) {
@@ -596,6 +597,7 @@
     } else {
         from sourceSets.main.output
     }
+    exclude "META-INF/*.kotlin_module"
 }
 
 task R8NoManifestNoDeps(type: ShadowJar) {
@@ -619,6 +621,7 @@
     } else {
         from sourceSets.main.output
     }
+    exclude "META-INF/*.kotlin_module"
 }
 
 task D8(type: ShadowJar) {