[PATCH] perf tests: Fix coresight `perf test` failure.

[Jeremy Linton <jeremy.linton@arm.com>]

Currently the `perf test` always fails the coresight test like:

89: Check Arm CoreSight trace data recording and synthesized samples: FAILED!

That is because the test_arm_coresight.sh is attempting to SIGINT the
parent but is using $$ rather than $PPID and it sigint's itself when
run under the perf test framework. Since this is done in a trap clause
it ends up returning a non zero return. Since $PPID is a bash ism and
not all distros are linking /bin/sh to bash, the alternative
parent pid lookups are uglier than just dropping the kill, and its
not strictly needed, lets pick the simple solution and drop the sigint.

Fixes: 133fe2e617e4 ("perf tests: Improve temp file cleanup in test_arm_coresight.sh")
Cc: James Clark <james.clark@arm.com>
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
---
 tools/perf/tests/shell/test_arm_coresight.sh | 1 -
 1 file changed, 1 deletion(-)

diff --git a/tools/perf/tests/shell/test_arm_coresight.sh b/tools/perf/tests/shell/test_arm_coresight.sh
index 6de53b7ef5ff..e4cb4f1806ff 100755
--- a/tools/perf/tests/shell/test_arm_coresight.sh
+++ b/tools/perf/tests/shell/test_arm_coresight.sh
@@ -29,7 +29,6 @@ cleanup_files()
 	rm -f ${file}
 	rm -f "${perfdata}.old"
 	trap - exit term int
-	kill -2 $$
 	exit $glb_err
 }
 
-- 
2.35.1