fix(data-table-v2): fix the undefined method called when press in esc…

…ape key, resolves #674

src/components/data-table-v2/data-table-v2.js

@@ -210,21 +210,9 @@ class DataTableV2 extends mixin(createComponent, initComponentBySearch, eventedS
     });
   };
 
-  _batchCancel() {
-    const inputs = [...this.element.querySelectorAll(this.options.selectorCheckbox)];
-
-    inputs.forEach(item => {
-      item.checked = false;
-    });
-
-    this.state.checkboxCount = 0;
-    this._actionBarToggle(false);
-    this.countEl.textContent = this.state.checkboxCount;
-  }
-
   _keydownHandler = evt => {
     if (evt.which === 27) {
-      this._batchCancel();
+      this._actionBarCancel();
     }
   };