[RuntimeDyld] Replace a crufty old ARM RuntimeDyld test with a new one that uses
RuntimeDyldChecker.

This allows us to remove one of the six remaining object files in the LLVM
source tree.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212780 91177308-0d34-0410-b5e6-96231b3b80d8