common: remove duplicate typedef for uchar

With commit 37db55b7 ("linux/types.h: fix typo unchar") we have a
duplicate typedef for uchar. As linux/types.h is included in common.h we
don't need another typedef for uchar there.

Fixes: 37db55b7 ("linux/types.h: fix typo unchar")
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: NJoe Hershberger <joe.hershberger@ni.com>

include/common.h

@@ -15,7 +15,6 @@
 
 #ifndef __ASSEMBLY__		/* put C only stuff in this section */
 
-typedef unsigned char		uchar;
 typedef volatile unsigned long	vu_long;
 typedef volatile unsigned short vu_short;
 typedef volatile unsigned char	vu_char;