ALSA: line6: Remove revision.h

The definition is no longer used.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/usb/line6/driver.c b/sound/usb/line6/driver.c
index f46da99..786b381 100644
--- a/sound/usb/line6/driver.c
+++ b/sound/usb/line6/driver.c
@@ -22,7 +22,6 @@
 #include "driver.h"
 #include "midi.h"
 #include "playback.h"
-#include "revision.h"
 #include "usbdefs.h"
 
 #define DRIVER_AUTHOR  "Markus Grabner <grabner@icg.tugraz.at>"
diff --git a/sound/usb/line6/revision.h b/sound/usb/line6/revision.h
deleted file mode 100644
index b4eee2b..0000000
--- a/sound/usb/line6/revision.h
+++ /dev/null
@@ -1,4 +0,0 @@
-#ifndef DRIVER_REVISION
-/* current subversion revision */
-#define DRIVER_REVISION " (904)"
-#endif