[MIPS] Remove support for NEC DDB5476.

As warned several times before.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/ddb5xxx/common/prom.c b/arch/mips/ddb5xxx/common/prom.c
index 18eecbc..00c62c1 100644
--- a/arch/mips/ddb5xxx/common/prom.c
+++ b/arch/mips/ddb5xxx/common/prom.c
@@ -56,10 +56,7 @@
 
 	mips_machgroup = MACH_GROUP_NEC_DDB;
 
-#if defined(CONFIG_DDB5476)
-	mips_machtype = MACH_NEC_DDB5476;
-	add_memory_region(0, DDB_SDRAM_SIZE, BOOT_MEM_RAM);
-#elif defined(CONFIG_DDB5477)
+#if defined(CONFIG_DDB5477)
 	ddb5477_runtime_detection();
 	add_memory_region(0, board_ram_size, BOOT_MEM_RAM);
 #endif