code: function (inst, registrationName) {
  	    var PluginModule = EventPluginRegistry.registrationNameModules[registrationName];
  	    if (PluginModule && PluginModule.willDeleteListener) {
  	      PluginModule.willDeleteListener(inst, registrationName);
  	    }
  
  	    var bankForRegistrationName = listenerBank[registrationName];
  	    // TODO: This should never be null -- when is it?
  	    if (bankForRegistrationName) {
  	      var key = getDictionaryKey(inst);
  	      delete bankForRegistrationName[key];
  	    }
  	  }
docs: Deletes a listener from the registration bank.
  
  @param {object} inst The instance, which is the source of events.
  @param {string} registrationName Name of listener (e.g. `onClick`).