[ARM] Remove unnecessary head-integrator.o object.

Integrator boot loaders pass all the relevant information to the
kernel, there is no need to add code to provide this information.

arch/arm/boot/compressed/Makefile

@@ -23,10 +23,6 @@ ifeq ($(CONFIG_ARCH_SHARK),y)
 OBJS		+= head-shark.o ofw-shark.o
 endif
 
-ifeq ($(CONFIG_ARCH_INTEGRATOR),y)
-OBJS		+= head-integrator.o
-endif
-
 ifeq ($(CONFIG_ARCH_CAMELOT),y)
 OBJS		+= head-epxa10db.o
 endif

arch/arm/boot/compressed/head-integrator.S

-#include <asm/mach-types.h>
-
-		.section	".start", "ax"
-		mov	r7, #MACH_TYPE_INTEGRATOR