[OStatus] Remove TFN's deprecated Census event and fix small typo in the code

plugins/OStatus/OStatusPlugin.php

@@ -1440,18 +1440,6 @@ class OStatusPlugin extends Plugin
         return true;
     }
 
-    /**
-     * Subscribe OS's profile class to the TFN module
-     * 
-     * @param array $federation
-     * @return bool event hook return
-     */
-    public function onStartTFNCensus(array &$federation): bool
-    {
-        $federation[] = 'Ostatus_profile';
-        return true;
-    }
-
     /**
      * Utility function to check if the given URI is a canonical group profile
      * page, and if so return the ID number.
@@ -1704,10 +1692,10 @@ class OStatusPlugin extends Plugin
             $qm->enqueue($item, 'pushrenew');
         }
     }
-    
+
     /**
      * Try to grab and store the remote profile by the given uri
-     * 
+     *
      * @param string $uri
      * @param Profile &$profile
      * @return bool