These tests used to test the legacy JIT but since that has been removed they're
just redundantly testing MCJIT. Remove them and just leave their counterparts in
test/ExecutionEngine/MCJIT.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227010 91177308-0d34-0410-b5e6-96231b3b80d8