[ARM] remove pc_pointer()

pc_pointer() was a function to mask the PC for 26-bit ARMs, which
we no longer support.  Remove it.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index 368d171..c68b44a 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -59,7 +59,7 @@
 
 	if (in_lock_functions(pc)) {
 		fp = regs->ARM_fp;
-		pc = pc_pointer(((unsigned long *)fp)[-1]);
+		pc = ((unsigned long *)fp)[-1];
 	}
 
 	return pc;