Rephrase "This" in docstrings

Author: humitos

readthedocs/projects/models.py

@@ -378,13 +378,13 @@ def get_subproject_urls(self):
 
     def get_production_media_path(self, type_, version_slug, include_file=True):
         """
-        This is used to see if these files exist so we can offer them for
-        download.
+        Used to see if these files exist so we can offer them for download.
 
         :param type_: Media content type, ie - 'pdf', 'zip'
         :param version_slug: Project version slug for lookup
         :param include_file: Include file name in return
         :type include_file: bool
+
         :returns: Full path to media file or path
         """
         if getattr(settings, 'DEFAULT_PRIVACY_LEVEL', 'public') == 'public' or settings.DEBUG:

readthedocs/projects/tasks.py

@@ -1042,7 +1042,7 @@ def clear_html_artifacts(version):
 @app.task(queue='web')
 def sync_callback(_, version_pk, commit, *args, **kwargs):
     """
-    This will be called once the sync_files tasks are done.
+    Called once the sync_files tasks are done.
 
     The first argument is the result from previous tasks, which we discard.
     """

readthedocs/restapi/views/integrations.py

@@ -313,7 +313,7 @@ def handle_webhook(self):
 class WebhookView(APIView):
 
     """
-    This is the main webhook view for webhooks with an ID.
+    Main webhook view for webhooks with an ID.
 
     The handling of each view is handed off to another view. This should only
     ever get webhook requests for established webhooks on our side. The other