[test] Clean up Py2 code

Bug: chromium:1292013
Change-Id: If50c18249afe8b75154d4b111485280d158a5582
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3525137Reviewed-by: Liviu Rau <liviurau@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79506}

test/mjsunit/testcfg.py

@@ -35,10 +35,6 @@ from testrunner.local import testsuite
 from testrunner.objects import testcase
 from testrunner.outproc import base as outproc
 
-try:
-  basestring       # Python 2
-except NameError:  # Python 3
-  basestring = str
 
 FILES_PATTERN = re.compile(r"//\s+Files:(.*)")
 ENV_PATTERN = re.compile(r"//\s+Environment Variables:(.*)")
@@ -249,7 +245,7 @@ class CombinedTest(testcase.D8TestCase):
 
   def _is_flag_blocked(self, flag):
     for item in MISBEHAVING_COMBINED_TESTS_FLAGS:
-      if isinstance(item, basestring):
+      if isinstance(item, str):
         if item == flag:
           return True
       elif item.match(flag):

test/mozilla/testcfg.py

@@ -25,7 +25,6 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-# for py2/py3 compatibility
 from functools import reduce
 
 import os

test/test262/testcfg.py

@@ -25,9 +25,6 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-# for py2/py3 compatibility
-from __future__ import print_function
-
 import imp
 import itertools
 import os

test/unittests/testcfg.py

@@ -2,9 +2,6 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-# for py2/py3 compatibility
-from __future__ import print_function
-
 import os
 
 from testrunner.local import command

test/wasm-api-tests/testcfg.py

@@ -2,9 +2,6 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-# for py2/py3 compatibility
-from __future__ import print_function
-
 import os
 
 from testrunner.local import command