remove support for *.rc files am: 16bc50a1 am: 4e56d1ff am: 0e50b37e am:...

remove support for *.rc files am: 16bc50a1 am: 4e56d1ff am: 0e50b37e am: b2494f05 am: 1e24d6a4

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/1870522

Change-Id: Ia50e4a711c76cfee812371483a8e00db73ccb635