Remove debug #ifdef

This will fix the zoom not working issue when running on desktop.
I probably forgot to remove this before sending.

Bug: None

Change-Id: Ia2f50b46aefb427a80cbb84c32f7233ad010b0d0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1893357Reviewed-by: Ahmed Fakhry <afakhry@chromium.org>
Commit-Queue: Mitsuru Oshima <oshima@chromium.org>
Cr-Commit-Position: refs/heads/master@{#711486}

ui/display/manager/managed_display_info.cc

@@ -251,13 +251,12 @@ ManagedDisplayInfo ManagedDisplayInfo::CreateFromSpecWithID(
   display_info.SetRotation(rotation, Display::RotationSource::ACTIVE);
   display_info.set_zoom_factor(zoom_factor);
   display_info.SetBounds(bounds_in_native);
-#if 0
+
   if (!display_modes.size()) {
     display_modes.push_back(ManagedDisplayMode(
         display_info.size_in_pixel(), 60.0f,
         /*interlace=*/false, /*native=*/true, device_scale_factor));
   }
-#endif
 
   display_info.SetManagedDisplayModes(display_modes);