Remove the pylint locally-enabled message suppression

As of pylint 2.2 this message is no longer present in pylint, and
hence does not need suppressing. Sadly however this line errors pylint
>= 2.2 and hence need removing.

prospector/tools/pylint/__init__.py

@@ -62,8 +62,6 @@ def _prospector_configure(self, prospector_config, linter):
         # was disabled.
         linter.disable(
             'locally-disabled')  # notification about disabling a message
-        linter.disable(
-            'locally-enabled')  # notification about enabling a message
         linter.enable(
             'file-ignored')  # notification about disabling an entire file
         linter.enable('suppressed-message'