x86: Remove old broken timer implementation

Tidy up some old broken and unneeded implementations. These are not used
by coreboot or anything else now.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Reviewed-by: Michael Spang <spang@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Acked-by: Graeme Russ <graeme.russ@gmail.com>

arch/x86/cpu/Makefile

@@ -30,7 +30,7 @@ LIB	= $(obj)lib$(CPU).o
 
 START-y	= start.o
 START-$(CONFIG_X86_RESET_VECTOR) += resetvec.o start16.o
-COBJS	= interrupts.o cpu.o timer.o
+COBJS	= interrupts.o cpu.o
 
 SRCS	:= $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))

arch/x86/cpu/timer.c

@@ -1,20 +0,0 @@
-/*
- * Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- *
- * Alternatively, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") version 2 as published by the Free
- * Software Foundation.
- */
-
-#include <common.h>
-
-/* Temporary patch to maintain bisectability, removed in next commit */
-#ifndef CONFIG_SYS_X86_TSC_TIMER
-unsigned long timer_get_us(void)
-{
-	printf("timer_get_us used but not implemented.\n");
-	return 0;
-}
-#endif