MIPS: RM9000: Remove support for idle loop.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/kernel/idle.c

@@ -224,10 +224,6 @@ void __init check_wait(void)
 		   cpu_wait = r4k_wait;
 		 */
 		break;
-	case CPU_RM9000:
-		if ((c->processor_id & 0x00ff) >= 0x40)
-			cpu_wait = r4k_wait;
-		break;
 	default:
 		break;
 	}