sparc32: drop sun4c specific stack validation

This allows us to kill run-time patching for this function too

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc/mm/srmmu.c

@@ -2145,7 +2145,6 @@ static void __init patch_window_trap_handlers(void)
 	unsigned long *iaddr, *daddr;
 	
 	PATCH_BRANCH(spwin_mmu_patchme, spwin_srmmu_stackchk);
-	PATCH_BRANCH(fwin_mmu_patchme, srmmu_fwin_stackchk);
 	PATCH_BRANCH(tsetup_mmu_patchme, tsetup_srmmu_stackchk);
 	PATCH_BRANCH(rtrap_mmu_patchme, srmmu_rett_stackchk);
 }