Add feature flag for removing legacy emoji font

The legacy emoji font is no longer used by the system from API 31, but
has been kept for compatibility.

Bug: 245610359
Test: m
Change-Id: I93e095cf3c76c718dbc90efcfa9bc96460f159a0
1 file changed
tree: 6624b2a7d6bc9106cb3023fe00a379ad33c70f07
  1. aconfig/
  2. build_config/
  3. build_flags.bzl
  4. release_config_map.mk