Remove incorrect use of $RESOURCE_FILES

The generated R.java is covered by the core build system and you don't
need to add it yourself.

Bug: 28389144
Change-Id: I8fbf83ebddad780fb5ab06739c9e83b58dda209d
(cherry picked from commit c64c0e28b2162b13ca4ac7f9e30767c6d8d3b7ee)
1 file changed
tree: b4e7b744eabfa68d254e189ef6b08c5a697a981a
  1. service/
  2. tests/