msan: disble CHECK test on powerpc64

It seems that CHECK terminates the process with 0 status on powerpc64:
https://reviews.llvm.org/D112440#3084251
Disable the test for now.

Reviewed By: melver

Differential Revision: https://reviews.llvm.org/D112455

compiler-rt/lib/sanitizer_common/sanitizer_termination.cpp

@@ -84,7 +84,6 @@ void NORETURN CheckFailed(const char *file, int line, const char *cond,
   }
   if (CheckUnwindCallback)
     CheckUnwindCallback();
-  Trap();
   Die();
 }