blackfin: delete non-required instances of <linux/init.h>

None of these files are actually using any __init type directives
and hence don't need to include <linux/init.h>.  Most are just a
left over from __devinit and __cpuinit removal, or simply due to
code getting copied from one driver to the next.

Cc: Mike Frysinger <vapier@gentoo.org>
Cc: uclinux-dist-devel@blackfin.uclinux.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

arch/blackfin/mach-common/cache-c.c

@@ -6,7 +6,6 @@
  * Licensed under the GPL-2 or later.
  */
 
-#include <linux/init.h>
 #include <asm/blackfin.h>
 #include <asm/cplbinit.h>
 

arch/blackfin/mach-common/clocks-init.c

@@ -7,7 +7,6 @@
  */
 
 #include <linux/linkage.h>
-#include <linux/init.h>
 #include <asm/blackfin.h>
 
 #include <asm/dma.h>

arch/blackfin/mach-common/scb-init.c

@@ -6,7 +6,6 @@
  * Licensed under the GPL-2 or later.
  */
 
-#include <linux/init.h>
 #include <linux/errno.h>
 #include <linux/kernel.h>
 #include <asm/scb.h>