avocado/core/runner.py: drop conditional import

On all tested Python 3 versions, the SimpleQueue is available from
the multiprocessing module, so let's drop the conditional import.
Signed-off-by: NCleber Rosa <crosa@redhat.com>

avocado/core/runner.py

@@ -17,7 +17,7 @@
 Test runner module.
 """
 
-import multiprocessing.queues
+import multiprocessing
 import os
 import signal
 import sys
@@ -582,14 +582,7 @@ class TestRunner(object):
         summary = set()
         if self.job.sysinfo is not None:
             self.job.sysinfo.start_job_hook()
-
-        # Python 3 can choose a context type for queues, but SimpleQueue
-        # lives directly under the module namespace
-        if hasattr(multiprocessing, 'SimpleQueue'):
-            queue = multiprocessing.SimpleQueue()
-        else:
-            queue = multiprocessing.queues.SimpleQueue()  # pylint: disable=E1125
-
+        queue = multiprocessing.SimpleQueue()
         if timeout > 0:
             deadline = time.time() + timeout
         else:

selftests/unit/test_runner_queue.py

@@ -34,10 +34,7 @@ class TestRunnerQueue(unittest.TestCase):
         :param factory: the Avocado Test factory
         :return: the last queue message from the test
         """
-        if hasattr(multiprocessing, 'SimpleQueue'):
-            queue = multiprocessing.SimpleQueue()
-        else:
-            queue = multiprocessing.queues.SimpleQueue()  # pylint: disable=E1125
+        queue = multiprocessing.SimpleQueue()
         runner = TestRunner(job=self.job, result=self.result)
         runner._run_test(factory, queue)
         while not queue.empty():