code: function(recognizer) {
          if (invokeArrayArg(recognizer, 'remove', this)) {
              return this;
          }
  
          recognizer = this.get(recognizer);
  
          // let's make sure this recognizer exists
          if (recognizer) {
              var recognizers = this.recognizers;
              var index = inArray(recognizers, recognizer);
  
              if (index !== -1) {
                  recognizers.splice(index, 1);
                  this.touchAction.update();
              }
          }
  
          return this;
      }
docs: remove a recognizer by name or instance
  @param {Recognizer|String} recognizer
  @returns {Manager}