Disable Remote MCJIT tests on ARM

The communication protocol is unstable on ARM when compiled
with Clang, which is disrupting the self-hosting buildbots that
are going to be added this week. I'm working on a solution, but
remote MCJIT is not high-priority for ARM at the moment, so it
might take a while.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196257 91177308-0d34-0410-b5e6-96231b3b80d8

test/ExecutionEngine/MCJIT/remote/lit.local.cfg

@@ -1,3 +1,2 @@
-if 'armv4' in config.root.target_triple or \
-        'armv5' in config.root.target_triple:
+if 'arm' in config.root.target_triple:
     config.unsupported = True