macosx vout: remove unneeded center when resizing the window

Note that the origin values can also be negative when we have our window
on a secondary screen.
(cherry picked from commit 1cee2e3b)
Signed-off-by: David Fuhrmann <david.fuhrmann@googlemail.com>

modules/video_output/macosx.m

@@ -561,8 +561,6 @@ static void OpenglSwap(vlc_gl_t *gl)
     if (![[self window] isFullscreen])
     {
         NSRect frame = [value rectValue];
-        if (frame.origin.x <= 0.0 && frame.origin.y <= 0.0)
-            [[self window] center];
         [[self window] setFrame:frame display:YES animate: YES];
     }
 }