title: ag-grid how to remove the sum prefix for an aggregation func
body: <p>I have the sum function but I don't want the word 'sum' label to be part of the prefix of the column name.</p>
  <p><a href="https://i.stack.imgur.com/m4EZH.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/m4EZH.png" alt="enter image description here" /></a></p>
  <p>Here is an example from the documentation showing the sum and a Plurk to play around with the code.</p>
  <p><a href="https://www.ag-grid.com/javascript-data-grid/aggregation/" rel="nofollow noreferrer">https://www.ag-grid.com/javascript-data-grid/aggregation/</a></p>
  <p>I would appreciate if anybody knows how to remove that prefix from the column name thanks.</p>