remove unused values

src/components/structures/LeftPanel.tsx

@@ -157,9 +157,6 @@ export default class LeftPanel extends React.Component<IProps, IState> {
         const bottomEdge = list.offsetHeight + list.scrollTop;
         const sublists = list.querySelectorAll<HTMLDivElement>(".mx_RoomSublist:not(.mx_RoomSublist_hidden)");
 
-        const headerRightMargin = 15; // calculated from margins and widths to align with non-sticky tiles
-        const headerStickyWidth = list.clientWidth - headerRightMargin;
-
         // We track which styles we want on a target before making the changes to avoid
         // excessive layout updates.
         const targetStyles = new Map<HTMLDivElement, {