[asan] remove the test for cfree. 'man cfree' says: 'This function should never be used.' and this function is not found on many OSes we support.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@147301 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed