powerpc: Remove double braces in alignment code.

Looks like I introduced this when adding LE support.

Signed-off-by: Anton Blanchard <[e-mail]>
Signed-off-by: Michael Ellerman <[e-mail]>

arch/powerpc/kernel/align.c

···
 		flush_fp_to_thread(current);
 	}
 
-	if ((nb == 16)) {
+	if (nb == 16) {
 		if (flags & F) {
 			/* Special case for 16-byte FP loads and stores */
 			PPC_WARN_ALIGNMENT(fp_pair, regs);