microblaze: Remove empty file - cpu.c

No need to have empty unused file in architecture code.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

arch/microblaze/cpu/Makefile

@@ -7,5 +7,5 @@
 
 extra-y	= start.o
 obj-y	= irq.o
-obj-y	+= cpu.o interrupts.o cache.o exception.o timer.o
+obj-y	+= interrupts.o cache.o exception.o timer.o
 obj-$(CONFIG_SPL_BUILD)	+= spl.o

arch/microblaze/cpu/cpu.c

@@ -1,9 +0,0 @@
-/*
- * (C) Copyright 2004 Atmark Techno, Inc.
- *
- * Yasushi SHOJI <yashi@atmark-techno.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-/* EMPTY FILE */