clean up cruft, reindent in c_zookeeper

ext/c_zookeeper.rb

@@ -278,19 +278,16 @@ def event_thread_body
         logger.debug { "finished completions" }
       end
 
-      # in shutting down state, no more can be added to @reg
-      # if @_shutting_down  # TODO: this should probably also happen in the is_unrecoverable case!
-        # anything left over after all that gets the finger
-        remaining = @reg.next_batch + @reg.in_flight.values
+      # anything left over after all that gets the finger
+      remaining = @reg.next_batch + @reg.in_flight.values
 
-        logger.debug { "there are #{remaining.length} completions to awaken" }
+      logger.debug { "there are #{remaining.length} completions to awaken" }
 
-        @reg.in_flight.clear
+      @reg.in_flight.clear
 
-        while cb = remaining.shift
-          cb.shutdown!
-        end
-      # end
+      while cb = remaining.shift
+        cb.shutdown!
+      end
     rescue ShuttingDownException
       logger.error { "event thread saw @_shutting_down, bailing without entering loop" }
     ensure