Update run_on_as_app to only run r8lib on the bots

Bug: 149519704
Change-Id: I4cd0456dff5641fa8e47acdbbc390f987f40839f
diff --git a/tools/run_on_as_app.py b/tools/run_on_as_app.py
index ee7cde4..abd0f71 100755
--- a/tools/run_on_as_app.py
+++ b/tools/run_on_as_app.py
@@ -1223,7 +1223,8 @@
     for shrinker in options.shrinker:
       assert shrinker in SHRINKERS
   else:
-    options.shrinker = ['r8', 'r8-full']
+    options.shrinker = [shrinker for shrinker in SHRINKERS]
+
   if options.hash or options.version:
     # No need to build R8 if a specific version should be used.
     options.no_build = True
@@ -1266,7 +1267,7 @@
     options.no_logging = False
     # TODO(b/141081520): Remove logging filter once fixed.
     options.app_logging_filter = ['sqldelight']
-    options.shrinker = [shrinker for shrinker in SHRINKERS if shrinker != 'pg']
+    options.shrinker = ['r8', 'r8-full']
     print(options.shrinker)
 
   if options.golem: