run-tests: remove some unnecessary globals

tests/run-tests.py

@@ -836,8 +836,6 b' def run(cmd, wd, options, replacements):'
 def runone(options, test):
     '''returns a result element: (code, test, msg)'''
 
-    global iolock
-
     def skip(msg):
         if options.verbose:
             log("\nSkipping %s: %s" % (testpath, msg))
@@ -1152,8 +1150,6 b' times = []'
 iolock = threading.Lock()
 
 def runqueue(options, tests):
-    global results, resultslock
-
     for test in tests:
         code, test, msg = runone(options, test)
         resultslock.acquire()