Revert "Fix TestPtrRef2Typedef with new const adornment on expected ref type."

The additional "const" breaks the FreeBSD buildbot, and does not appear
to be due to a LLVM or Clang change.  Revert the change while
investigating further.

This reverts revision 206619.


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@206751 91177308-0d34-0410-b5e6-96231b3b80d8
Remove decorator for now-passing test

I am not sure if this is due to an LLDB change, or the fact that FreeBSD
now has Clang 3.4.

llvm.org/pr19075


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@206757 91177308-0d34-0410-b5e6-96231b3b80d8