Fix run-libcore-tests exclusions for fugu.

Don't include libcore_debug_failures.txt on fugu debug.
as it has duplicate entries with libcore_fugu_failures.txt.

This is odd, but it is what the bash script used to do.

Change-Id: Ia7ebf48ac84f4f7b08f8868345c61e1207cd0e04
1 file changed