Revert 199262 - MCJIT remote still failing on ARM

Disabling remote MCJIT tests on ARM again, as they're still failing when
self-hosting on ARM, despite all my tests. At least now we have more info
on what message it's breaking and what is going on. Investigating.

llvm-svn: 199310

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

@@ -4,5 +4,5 @@ if 'armv4' in config.root.target_triple or \
 
 # This is temporary, until Remote MCJIT works on ARM
 # See http://llvm.org/bugs/show_bug.cgi?id=18057
-if 'armv7' in root.host_arch:
-    config.unsupported = False
+if 'armv7' in config.root.target_triple:
+    config.unsupported = True