<rdar://problem/13019628>

Prevent profiling from working on older debugserver. Just a simple renaming since the caller is prepared to handle the ‘unimplemented’ answer.

git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@172583 91177308-0d34-0410-b5e6-96231b3b80d8