[MIPS] tlb-r4k: Nuke broken paranoia error test.

Bug originally found and reported by Julia Lawall <[e-mail]>. I
decieded that the whole error check was mostly useless paranoia and should
be discarded. It would only ever trigger if r3k_have_wired_reg has a wrong
value.

Signed-off-by: Ralf Baechle <[e-mail]>

arch/mips/mm/tlb-r3k.c

···
 		old_pagemask = read_c0_pagemask();
 		w = read_c0_wired();
 		write_c0_wired(w + 1);
-		if (read_c0_wired() != w + 1) {
-			printk("[tlbwired] No WIRED reg?\n");
-			return;
-		}
 		write_c0_index(w << 8);
 		write_c0_pagemask(pagemask);
 		write_c0_entryhi(entryhi);