MIPS: TXx9: Remove forced serial console setting

It is not always used, even if it is available.

Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org>
Cc: linux-mips <linux-mips@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/933/
Acked-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/txx9/generic/setup.c

@@ -399,11 +399,6 @@ const char *get_system_type(void)
 	return txx9_system_type;
 }
 
-char * __init prom_getcmdline(void)
-{
-	return &(arcs_cmdline[0]);
-}
-
 const char *__init prom_getenv(const char *name)
 {
 	const s32 *str;