Remove phony rules am: da70d9a2d9

Original change: https://android-review.googlesource.com/c/platform/prebuilts/vndk/v29/+/1328496

Change-Id: I7c29ab92613226ae4b4951ececa3eabc48f85af2
tree: 376acf8ecc8caa7f68dd948806a28a06e9dd143d
  1. Android.bp
  2. arm/
  3. arm64/
  4. common/
  5. x86/
  6. x86_64/