title: Remove Column Filter Placeholder from Ng-Smart-Table
body: <p>Been fighting with ng-smart-table trying to find an elegant way to remove the <strong>Column Filter placeholder</strong> without overriding the javascript. I know i can modify node_modules the module within that directory but i need to modify this inside the component. Any ideas?</p>
  
  <p>Here are my column settings. I've tried to modify the cell but nothing seems to override the placeholder which displays the name of the column.</p>
  
  <pre><code>public settings: any = {
      actions: false,
      noDataMessage: 'Loading... please wait!',
      filtering: {filterString: ''},
      className: ['table-striped', 'table-bordered'],
      columns: {
          customerName: {
            title: 'Account',
            class: 'topHeading',
          },
  }
  </code></pre>