ARM: at91: remove references to RM9200DK

The AT91 RM9200DK board was removed long time ago.
Remove existing references that were not cleaned up.

Fixes: 1c85752258 ("ARM: remove broken "at91rm9200dk" board")
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
diff --git a/arch/arm/cpu/arm920t/start.S b/arch/arm/cpu/arm920t/start.S
index 02cbda9..cba4a1f 100644
--- a/arch/arm/cpu/arm920t/start.S
+++ b/arch/arm/cpu/arm920t/start.S
@@ -35,20 +35,6 @@
 	orr	r0, r0, #0xd3
 	msr	cpsr, r0
 
-#if	defined(CONFIG_AT91RM9200DK)
-	/*
-	 * relocate exception table
-	 */
-	ldr	r0, =_start
-	ldr	r1, =0x0
-	mov	r2, #16
-copyex:
-	subs	r2, r2, #1
-	ldr	r3, [r0], #4
-	str	r3, [r1], #4
-	bne	copyex
-#endif
-
 	/*
 	 * we do sys-critical inits only at reboot,
 	 * not when booting from ram!
diff --git a/arch/arm/include/asm/mach-types.h b/arch/arm/include/asm/mach-types.h
index 32532b3..2713b1d 100644
--- a/arch/arm/include/asm/mach-types.h
+++ b/arch/arm/include/asm/mach-types.h
@@ -267,7 +267,6 @@
 #define MACH_TYPE_BMS                  259
 #define MACH_TYPE_IXCDP1100            260
 #define MACH_TYPE_PRPMC1100            261
-#define MACH_TYPE_AT91RM9200DK         262
 #define MACH_TYPE_ARMSTICK             263
 #define MACH_TYPE_ARMONIE              264
 #define MACH_TYPE_MPORT1               265