vt_buffer.h: get rid of dead code in default scr_...() instances

Only 4 architectures define VT_BUF_HAVE_RW (alpha, mips, powerpc, sparc)
and all of them define VT_BUF_HAVE_MEM{SET,CPY,MOVE}W.  In other
words, the code under #ifdef VT_BUF_HAVE_RW in default scr_mem...w()
instances won't be compiled anyway.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Author: Al Viro

include/linux/vt_buffer.h

@@ -28,45 +28,21 @@
 #ifndef VT_BUF_HAVE_MEMSETW
 static inline void scr_memsetw(u16 *s, u16 c, unsigned int count)
 {
-#ifdef VT_BUF_HAVE_RW
-	count /= 2;
-	while (count--)
-		scr_writew(c, s++);
-#else
 	memset16(s, c, count / 2);
-#endif
 }
 #endif
 
 #ifndef VT_BUF_HAVE_MEMCPYW
 static inline void scr_memcpyw(u16 *d, const u16 *s, unsigned int count)
 {
-#ifdef VT_BUF_HAVE_RW
-	count /= 2;
-	while (count--)
-		scr_writew(scr_readw(s++), d++);
-#else
 	memcpy(d, s, count);
-#endif
 }
 #endif
 
 #ifndef VT_BUF_HAVE_MEMMOVEW
 static inline void scr_memmovew(u16 *d, const u16 *s, unsigned int count)
 {
-#ifdef VT_BUF_HAVE_RW
-	if (d < s)
-		scr_memcpyw(d, s, count);
-	else {
-		count /= 2;
-		d += count;
-		s += count;
-		while (count--)
-			scr_writew(scr_readw(--s), --d);
-	}
-#else
 	memmove(d, s, count);
-#endif
 }
 #endif