fix lint errors

src/python/pants/backend/python/tasks/build_local_python_distributions.py

@@ -22,7 +22,7 @@
 from pants.base.fingerprint_strategy import DefaultFingerprintStrategy
 from pants.build_graph.address import Address
 from pants.task.task import Task
-from pants.util.contextutil import environment_as, temporary_dir
+from pants.util.contextutil import environment_as
 from pants.util.dirutil import safe_mkdir
 from pants.util.memo import memoized_property
 
@@ -124,7 +124,6 @@ def _sandboxed_setuppy(self):
     with environment_as(**sanitized_env):
       yield
 
-
   def _create_dist(self, dist_tgt, dist_target_dir, interpreter):
     """Create a .whl file for the specified python_distribution target."""
     self.context.log.debug("dist_target_dir: '{}'".format(dist_target_dir))