Remove ndk_platform backend. Use the ndk backend. am: 45eee70204 am: f9e6fe8d5f am: 0e024c319e am: 01ae3f8c61

Original change: https://android-review.googlesource.com/c/platform/system/libfmq/+/1778411

Change-Id: Id4575ab7a477e9032dfd9f4fd7b00097ba6872fd
tree: 9e65826d56343cc114aed3dc0eda02526919709d
  1. base/
  2. benchmarks/
  3. fuzzer/
  4. include/
  5. tests/
  6. Android.bp
  7. EventFlag.cpp
  8. FmqInternal.cpp
  9. OWNERS
  10. PREUPLOAD.cfg
  11. TEST_MAPPING