Skip test which is causing ERRORs in dotest.py after r237053

This test runs fine on its own, but leaves python in a bad state to
where all tests that run after it error out.  See llvm.org/pr24575.
This resolves the concerns raised in http://reviews.llvm.org/rL237053.

Reviewed by: clayborg, ted
Subscribers: lldb-commits
Differential Revision: http://reviews.llvm.org/D12329

llvm-svn: 246043