overviewControls: Remove superfluous max()

We don't need to call Math.max() to figure out the maximum of a
single value :-)

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1709>

js/ui/overviewControls.js

@@ -66,7 +66,7 @@ class ControlsManagerLayout extends Clutter.BoxLayout {
             workspaceBox.set_origin(0, searchHeight + spacing);
             workspaceBox.set_size(
                 width,
-                Math.round(Math.max(height * SMALL_WORKSPACE_RATIO)));
+                Math.round(height * SMALL_WORKSPACE_RATIO));
             break;
         }