Remove unused clang-r487747. am: f06ee55440 am: 445ad05132

Original change: https://googleplex-android-review.googlesource.com/c/platform/prebuilts/clang/host/darwin-x86/+/23372277

Change-Id: I4b9faed7a1300f76f0994cb219136d3b7ce8bd46
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>