[ALSA] aw2: remove duplicate MODULE_LICENSE

"GPL 2" does not mean that there have to be two MODULE_LICENSE("GPL")
entries.  ;-)
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/aw2/aw2-alsa.c

@@ -36,7 +36,6 @@
 #include "saa7146.h"
 #include "aw2-saa7146.h"
 
-MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Cedric Bregardis <cedric.bregardis@free.fr>, "
 	      "Jean-Christian Hassler <jhassler@free.fr>");
 MODULE_DESCRIPTION("Emagic Audiowerk 2 sound driver");