Removed shell option from subprocess.

servo · bors-servo · Sep 6, 2016 · Aug 19, 2016 · Aug 19, 2016 · Aug 19, 2016
commit eb18665f5b8248e127398436208c28384b62fbcd
diff --git a/etc/ci/performance/runner.py b/etc/ci/performance/runner.py
@@ -28,8 +28,7 @@ def execute_test(url, command, timeout):
     print(' '.join(command))
     print("Timeout:{}".format(timeout))
     try:
-        return subprocess.check_output(command, stderr=subprocess.STDOUT,
-                                       shell=True, timeout=timeout)
+        return subprocess.check_output(command, stderr=subprocess.STDOUT, timeout=timeout)
     except subprocess.CalledProcessError as e:
         print("Unexpected Fail:")
         print(e)