sdk: Remove unused proguard.txt

Change-Id: I342a9bb9865bd6958a64f46953d5aa1f6ca3d287
1 file changed
tree: 4d5c72984eb1ec79e02e88ebf37805a43540c3cb
  1. lib/
  2. lineage/
  3. packages/
  4. sdk/
  5. .gitignore
  6. Android.bp