perf cs-etm: Fix duplicated 'the' in comment

The double `the' is duplicated in the comment, remove one.

Signed-off-by: Jason Wang <[e-mail]>
Cc: Alexander Shishkin <[e-mail]>
Cc: James Clark <[e-mail]>
Cc: Jiri Olsa <[e-mail]>
Cc: John Garry <[e-mail]>
Cc: Leo Yan <[e-mail]>
Cc: Mark Rutland <[e-mail]>
Cc: Mathieu Poirier <[e-mail]>
Cc: Mike Leach <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Suzuki Poulouse <[e-mail]>
Cc: Will Deacon <[e-mail]>
Cc: [e-mail]
Cc: [e-mail]
Link: http://lore.kernel.org/lkml/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/util/cs-etm.c

···
 		 * tidq->packet->instr_count represents the number of
 		 * instructions in the current etm packet.
 		 *
-		 * Period instructions (Pi) contains the the number of
+		 * Period instructions (Pi) contains the number of
 		 * instructions executed after the sample point(n) from the
 		 * previous etm packet.  This will always be less than
 		 * etm->instructions_sample_period.