Failures on Fedora-ppc64be-native-gdbserver-m64, branch master

[sergiodj+buildbot@sergiodj.net]

Buildslave:
	fedora-ppc64be-1

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Fedora-ppc64be-native-gdbserver-m64/builds/5291>

Commit(s) tested:
	5e89eb3ab04a378133ff3da1ed23d4bd89a56b5e

Author(s) (in the same order as the commits):
	Simon Marchi <simon.marchi@ericsson.com>

Subject:
	gdb.base/commands.exp: Remove unused global references

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/results/Fedora-ppc64be-native-gdbserver-m64/5e/5e89eb3ab04a378133ff3da1ed23d4bd89a56b5e/>