Avoid applying compile options to the linker

Compile options aren't the same as link options and on some platforms
like Windows where the linker is invoked directly they're distinctly
different.

Author: petrhosek

libc/cmake/modules/LLVMLibCTestRules.cmake

@@ -272,7 +272,6 @@ function(create_libc_unittest fq_target_name)
   target_include_directories(${fq_build_target_name} SYSTEM PRIVATE ${LIBC_INCLUDE_DIR})
   target_include_directories(${fq_build_target_name} PRIVATE ${LIBC_SOURCE_DIR})
   target_compile_options(${fq_build_target_name} PRIVATE ${compile_options})
-  target_link_options(${fq_build_target_name} PRIVATE ${compile_options})
 
   if(NOT LIBC_UNITTEST_CXX_STANDARD)
     set(LIBC_UNITTEST_CXX_STANDARD ${CMAKE_CXX_STANDARD})