Don't reset PYTHONPATH

With nexedi/slapos!862 we no longer need this

See merge request nexedi/slapos.core!270

slapos/slap/standalone.py

@@ -711,7 +711,6 @@ class StandaloneSlapOS(object):
         return subprocess.check_call(
             command,
             shell=True,
-            env=self._getSubprocessEnvironment(),
         )
       except subprocess.CalledProcessError as e:
         if e.returncode == SLAPGRID_PROMISE_FAIL:
@@ -775,7 +774,6 @@ class StandaloneSlapOS(object):
     output = subprocess.check_output(
         ['supervisord', '--configuration', self._supervisor_config],
         cwd=self._base_directory,
-        env=self._getSubprocessEnvironment(),
     )
     self._logger.debug("Started new supervisor: %s", output)
 
@@ -806,14 +804,3 @@ class StandaloneSlapOS(object):
         return
       time.sleep(i * .01)
     raise RuntimeError("SlapOS not started")
-
-  def _getSubprocessEnvironment(self):
-    # Running tests with `python setup.py test` sets a PYTHONPATH that
-    # is suitable for current python, but problematic when this process
-    # runs another version of python in subprocess.
-    if 'PYTHONPATH' in os.environ:
-      self._logger.warning(
-        "Removing $PYTHONPATH from environment for subprocess")
-      env = os.environ.copy()
-      del env['PYTHONPATH']
-      return env

slapos/testing/utils.py

@@ -219,8 +219,7 @@ class CrontabMixin(object):
     """
     crontab_command =  self._getCrontabCommand(crontab_name)
     crontab_output = subprocess.check_output(
-        # XXX we unset PYTHONPATH set by `setup.py test`
-        "env PYTHONPATH= faketime {date} bash -o pipefail -e -c '{crontab_command}'".format(**locals()),
+        "faketime {date} bash -o pipefail -e -c '{crontab_command}'".format(**locals()),
         shell=True,
     )
     self.logger.debug("crontab %s output: %s", crontab_command, crontab_output)