PLT-4606: Date separator in RHS (#5606)

webapp/components/rhs_comment.jsx

@@ -564,9 +564,6 @@ export default class RhsComment extends React.Component {
         }
 
         const timeOptions = {
-            day: 'numeric',
-            month: 'short',
-            year: 'numeric',
             hour: '2-digit',
             minute: '2-digit',
             hour12: !this.props.useMilitaryTime