ui/egl-headless: Remove a check for CONFIG_OPENGL

ui/egl-headless is only built when CONFIG_OPENGL is defined because it
depends on CONFIG_OPENGL without condition. Remove a redundant
conditonal in ui/egl-headless.c

Signed-off-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210714055646.85952-1-akihiko.odaki@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

ui/egl-headless.c

@@ -214,6 +214,4 @@ static void register_egl(void)
 
 type_init(register_egl);
 
-#ifdef CONFIG_OPENGL
 module_dep("ui-opengl");
-#endif