perf tools: Remove trivial extra semincolon

Accidentally ran into these, get rid of them.

Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Link: http://lkml.kernel.org/r/1384323864.2527.8.camel@buesod1.americas.hpqcorp.net


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>