[asan] Remove CallocOverflow32 test from asan_test.

The same as with MSan, this test behavior depends on ASAN_OPTIONS, and we've
got a lit_test that covers this.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@192777 91177308-0d34-0410-b5e6-96231b3b80d8