The stdout from tests is no longer compared against anything (not even

to make sure it is empty), so eliminate the message that says running
under verbose is different from running without it.

Lib/test/regrtest.py

@@ -548,9 +548,6 @@ def main(tests=None, testdir=None, verbose=0, quiet=False,
         if not bad and not skipped and len(good) > 1:
             print("All", end=' ')
         print(count(len(good), "test"), "OK.")
-        if verbose:
-            print("CAUTION:  stdout isn't compared in verbose mode:")
-            print("a test that passes in verbose mode may fail without it.")
     if print_slow:
         test_times.sort(reverse=True)
         print("10 slowest tests:")