Remove source also in Android AMDGPU target
Fixes the following building error:
ninja: error: 'external/llvm/lib/Target/AMDGPU/SIInsertWaits.cpp',
needed by 'out/target/product/x86/obj/STATIC_LIBRARIES/libLLVMAMDGPUCodeGen_intermediates/SIInsertWaits.o',
missing and no known rule to make it
11:44:43 ninja failed with: exit status 1
Reference:
ac95aa536 ("[AMDGPU][Waitcnt] Remove the old waitcnt pass")
SIFrameLowering.cpp \
SIInsertSkips.cpp \
SIInsertWaitcnts.cpp \
- SIInsertWaits.cpp \
SIInstrInfo.cpp \
SIISelLowering.cpp \
SILoadStoreOptimizer.cpp \