[CMake][Apple-stage2] Don't link with -fno-pie

On Darwin the default is to build PIC and link PIE. We shouldn't need to override that in the Apple Clang distributions.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@268642 91177308-0d34-0410-b5e6-96231b3b80d8

cmake/caches/Apple-stage2.cmake

@@ -28,7 +28,6 @@ set(COMPILER_RT_INCLUDE_TESTS OFF CACHE BOOL "")
 set(LLVM_ENABLE_LTO ON CACHE BOOL "")
 set(CMAKE_C_FLAGS "-fno-stack-protector -fno-common -Wno-profile-instr-unprofiled" CACHE STRING "")
 set(CMAKE_CXX_FLAGS "-fno-stack-protector -fno-common -Wno-profile-instr-unprofiled" CACHE STRING "")
-set(CMAKE_EXE_LINKER_FLAGS "-fno-pie" CACHE STRING "")
 set(CMAKE_C_FLAGS_RELWITHDEBINFO "-O2 -gline-tables-only -DNDEBUG" CACHE STRING "")
 set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O2 -gline-tables-only -DNDEBUG" CACHE STRING "")
 set(CMAKE_BUILD_TYPE RelWithDebInfo CACHE STRING "")