MIPS: DEC: remove unbuildable promcon.c

promcon.o is built if CONFIG_PROM_CONSOLE is set. But there's no Kconfig
symbol PROM_CONSOLE, so promcon.c is unbuildable. Remove it.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Acked-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/5344/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/dec/Makefile

@@ -5,6 +5,5 @@
 obj-y		:= ecc-berr.o int-handler.o ioasic-irq.o kn01-berr.o \
 		   kn02-irq.o kn02xa-berr.o reset.o setup.o time.o
 
-obj-$(CONFIG_PROM_CONSOLE)	+= promcon.o
 obj-$(CONFIG_TC)		+= tc.o
 obj-$(CONFIG_CPU_HAS_WB)	+= wbflush.o

arch/mips/dec/promcon.c

-/*
- * Wrap-around code for a console using the
- * DECstation PROM io-routines.
- *
- * Copyright (c) 1998 Harald Koerfgen
- */
-
-#include <linux/tty.h>
-#include <linux/ptrace.h>
-#include <linux/init.h>
-#include <linux/console.h>
-#include <linux/fs.h>
-
-#include <asm/dec/prom.h>
-
-static void prom_console_write(struct console *co, const char *s,
-			       unsigned count)
-{
-	unsigned i;
-
-	/*
-	 *    Now, do each character
-	 */
-	for (i = 0; i < count; i++) {
-		if (*s == 10)
-			prom_printf("%c", 13);
-		prom_printf("%c", *s++);
-	}
-}
-
-static int __init prom_console_setup(struct console *co, char *options)
-{
-	return 0;
-}
-
-static struct console sercons = {
-	.name	= "ttyS",
-	.write	= prom_console_write,
-	.setup	= prom_console_setup,
-	.flags	= CON_PRINTBUFFER,
-	.index	= -1,
-};
-
-/*
- *    Register console.
- */
-
-static int __init prom_console_init(void)
-{
-	register_console(&sercons);
-
-	return 0;
-}
-console_initcall(prom_console_init);