Remove the custom get_view_name function

It appeared to not be doing anything that we were making use of that
couldn't already be done, slightly differently, using DRF's built-in
one.

awx/settings/defaults.py

@@ -307,7 +307,6 @@ REST_FRAMEWORK = {
     ),
     'DEFAULT_METADATA_CLASS': 'awx.api.metadata.Metadata',
     'EXCEPTION_HANDLER': 'awx.api.views.api_exception_handler',
-    'VIEW_NAME_FUNCTION': 'awx.api.generics.get_view_name',
     'VIEW_DESCRIPTION_FUNCTION': 'awx.api.generics.get_view_description',
     'NON_FIELD_ERRORS_KEY': '__all__',
     'DEFAULT_VERSION': 'v2',