Fix: DataBrowser is not updating accordingly (parse-community#1276)

Removes `DataBrowser.react#shouldComponentUpdate` in order to fix:

* Columns are not resizing
* Menu is not updating when there is a row selection
* Select all stopped working

Author: davimacedo

src/dashboard/Data/Browser/DataBrowser.react.js

@@ -47,23 +47,6 @@ export default class DataBrowser extends React.Component {
     this.saveOrderTimeout = null;
   }
 
-  shouldComponentUpdate(nextProps, nextState) {
-    const shallowVerifyStates = [...new Set(Object.keys(this.state).concat(Object.keys(nextState)))]
-      .filter(stateName => stateName !== 'order' && stateName !== 'copyableValue');
-    if (shallowVerifyStates.some(stateName => this.state[stateName] !== nextState[stateName])) {
-      return true;
-    }
-    if (JSON.stringify(this.state.order) !== JSON.stringify(nextState.order)) {
-      return true;
-    }
-    const shallowVerifyProps = [...new Set(Object.keys(this.props).concat(Object.keys(nextProps)))]
-      .filter(propName => propName !== 'columns');
-    if (shallowVerifyProps.some(propName => this.props[propName] !== nextProps[propName])) {
-      return true;
-    }
-    return JSON.stringify(this.props.columns) !== JSON.stringify(nextProps.columns);
-  }
-
   componentWillReceiveProps(props, context) {
     if (props.className !== this.props.className) {
       let order = ColumnPreferences.getOrder(