patchtest: Fix grammar in log output

(From OE-Core rev: ded6eb17dc423988cc975d72c36fe9ba6f28eab8)

Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/patchtest

@@ -162,7 +162,7 @@ def run(patch, logfile=None):
 
     print('----------------------------------------------------------------------\n')
     if premerge_result == 2 and postmerge_result == 2:
-        logger.error('patchtest: Not any test cases found - did you specify the correct suite directory?')
+        logger.error('patchtest: No test cases found - did you specify the correct suite directory?')
     if premerge_result == 1 or postmerge_result == 1:
         logger.error('patchtest: At least one patchtest caused a failure or an error - please check')
     else: