Remove java_group for AndroidX collections.

This is landing as a separate CL to allow easy reverting.

This should land after
https://chromium-review.googlesource.com/c/chromium/src/+/2078848

Internal clank changes already happened. Downstream changes happened
with 2645420.



Bug: 1052640
Change-Id: I26ecf10813a37be206ca5a49769a85943a3a8c05
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2079650Reviewed-by: Andrew Grieve <agrieve@chromium.org>
Commit-Queue: benjamin joyce <bjoyce@google.com>
Cr-Commit-Position: refs/heads/master@{#745743}

third_party/android_deps/BUILD.gn

@@ -135,12 +135,6 @@ java_group("com_android_support_cardview_v7_java") {
   ]
 }
 
-java_group("com_android_support_collections_java") {
-  deps = [ ":androidx_collection_collection_java" ]
-  input_jars_paths =
-      [ "libs/com_android_support_collections/collections-28.0.0.jar" ]
-}
-
 java_group("com_android_support_coordinatorlayout_java") {
   deps = [
     ":${target_name}_orig__unpack_aar",