Merge cherrypicks of ['android-review.googlesource.com/2464734'] into udc-release.

Change-Id: Ie47fa060d5a6f679458d0ea4c634627a2f96f378
diff --git a/Android.bp b/Android.bp
index 3451e77..3868e27 100644
--- a/Android.bp
+++ b/Android.bp
@@ -248,7 +248,6 @@
         "-fsized-deallocation",
         "-fexceptions",
         "-fcoroutines-ts",
-        "-Wno-deprecated-experimental-coroutine",
         "-Wno-format-zero-length",
         "-Wno-implicit-fallthrough",
         "-Wno-non-virtual-dtor",