sound/oss/opl3: Remove typedef opl_devinfo

This typedef is unnecessary and should just be removed as they are
never used.

The following Coccinelle semantic patch detects the case.

@tn@
identifier i;
type td;
@@

-typedef
 struct i { ... }
-td
 ;

@@
type tn.td;
identifier tn.i;
@@

-td
+ struct i
Signed-off-by: NHimangi Saraogi <himangi774@gmail.com>
Acked-by: NJulia Lawall <julia.lawall@lip6.fr>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/oss/opl3.c

@@ -52,7 +52,7 @@ struct voice_info
 	int             panning;	/* 0xffff means not set */
 };
 
-typedef struct opl_devinfo
+struct opl_devinfo
 {
 	int             base;
 	int             left_io, right_io;
@@ -73,7 +73,7 @@ typedef struct opl_devinfo
 	unsigned char   cmask;
 
 	int             is_opl4;
-} opl_devinfo;
+};
 
 static struct opl_devinfo *devc = NULL;