package/python-pygame: drop bogus BR2_PACKAGE_PYTHON_PYGAME_MIXER_MUSIC

The symbol does not configure anything, so drop it.
It was added in 2012 by commit 'dda08e492d Add pygame package'

Cc: Asaf Kahlon <asafka7@gmail.com>
Cc: Julien Boibessot <julien.boibessot@armadeus.com>
Cc: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/python-pygame/Config.in

@@ -41,12 +41,6 @@ config BR2_PACKAGE_PYTHON_PYGAME_MIXER
 	  pygame module for loading and playing sounds.
 	  Will autoselect sdl_mixer.
 
-config BR2_PACKAGE_PYTHON_PYGAME_MIXER_MUSIC
-	bool "pygame.mixer.music"
-	depends on BR2_PACKAGE_PYTHON_PYGAME_MIXER
-	help
-	  pygame module for controlling streamed audio
-
 config BR2_PACKAGE_PYTHON_PYGAME_SCRAP
 	bool "pygame.scrap"
 	depends on BR2_PACKAGE_SDL_X11