[Ubsan]Remove unused link libraries.

[aoli]

Summary

Remove unused link libraries metioned in D33216.

[vsk]

Looks fine.

Side note: in the future, instead of adding llvm-commits as a reviewer to a review, add it as a subscriber. You'll want to add specific people like @filcab to the reviewers list.

lib/ubsan/CMakeLists.txt

 append_rtti_flag(OFF UBSAN_STANDALONE_CFLAGS)
 append_list_if(SANITIZER_CAN_USE_CXXABI -DUBSAN_CAN_USE_CXXABI UBSAN_STANDALONE_CFLAGS)
 
 set(UBSAN_CXXFLAGS ${SANITIZER_COMMON_CFLAGS})
 append_rtti_flag(ON UBSAN_CXXFLAGS)
 append_list_if(SANITIZER_CAN_USE_CXXABI -DUBSAN_CAN_USE_CXXABI UBSAN_CXXFLAGS)
 
 append_list_if(COMPILER_RT_HAS_LIBDL dl UBSAN_DYNAMIC_LIBS)
-append_list_if(COMPILER_RT_HAS_LIBLOG log UBSAN_DYNAMIC_LIBS)
-append_list_if(COMPILER_RT_HAS_LIBC c UBSAN_DYNAMIC_LIBS)
 append_list_if(COMPILER_RT_HAS_LIBRT rt UBSAN_DYNAMIC_LIBS)
-append_list_if(COMPILER_RT_HAS_LIBM m UBSAN_DYNAMIC_LIBS)
 append_list_if(COMPILER_RT_HAS_LIBPTHREAD pthread UBSAN_DYNAMIC_LIBS)
-append_list_if(COMPILER_RT_HAS_LIBSTDCXX stdc++ UBSAN_DYNAMIC_LIBS)
- 
 add_compiler_rt_component(ubsan)
 
 if(APPLE)
   set(UBSAN_COMMON_SOURCES ${UBSAN_SOURCES})
   if(SANITIZER_CAN_USE_CXXABI)
     list(APPEND UBSAN_COMMON_SOURCES ${UBSAN_CXXABI_SOURCES})
   endif()