Staging: fbtft: fb_agm1264k-fl: Remove unnecessary cast

Remove explicit typecast from variables as compiler can typecast
implicitly.
Semantic patch used:

@@
type T;
T e;
identifier x;
@@

* T x = (T)e;

Signed-off-by: Shivani Bhardwaj <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/fbtft/fb_agm1264k-fl.c

···
 {
 	va_list args;
 	int i, ret;
-	u8 *buf = (u8 *)par->buf;
+	u8 *buf = par->buf;
 
 	if (unlikely(par->debug & DEBUG_WRITE_REGISTER)) {
 		va_start(args, len);