[PATCH] remove double "lock" in v_midi.h

A second instance of lock had been inadvertently added to v_midi.h

sound/oss/v_midi.h

@@ -11,6 +11,5 @@ typedef struct vmidi_devc {
 	   int input_opened;
 	   int intr_active;
 	   void (*midi_input_intr) (int dev, unsigned char data);
-	   spinlock_t lock;
 	} vmidi_devc;