aarch64: Remove some flavour conditionals

This change is expected to be a non-functional change.

Original request:
https://boringssl-review.googlesource.com/c/boringssl/+/42084

Change-Id: Ifbf85eb6cafebabf0cf063b7dd147417d01c280c
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/43584
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: David Benjamin <davidben@google.com>

crypto/fipsmodule/aes/asm/aesv8-armx.pl

@@ -340,11 +340,7 @@ $code.=<<___;
 .type	${prefix}_${dir}crypt,%function
 .align	5
 ${prefix}_${dir}crypt:
-___
-$code.=<<___	if ($flavour =~ /64/);
 	AARCH64_VALID_CALL_TARGET
-___
-$code.=<<___;
 	ldr	$rounds,[$key,#240]
 	vld1.32	{$rndkey0},[$key],#16
 	vld1.8	{$inout},[$inp]

crypto/fipsmodule/modes/asm/ghashv8-armx.pl

@@ -86,11 +86,7 @@ $code.=<<___;
 .type	gcm_init_v8,%function
 .align	4
 gcm_init_v8:
-___
-$code.=<<___	if ($flavour =~ /64/);
 	AARCH64_VALID_CALL_TARGET
-___
-$code.=<<___;
 	vld1.64		{$t1},[x1]		@ load input H
 	vmov.i8		$xC2,#0xe1
 	vshl.i64	$xC2,$xC2,#57		@ 0xc2.0
@@ -150,11 +146,7 @@ $code.=<<___;
 .type	gcm_gmult_v8,%function
 .align	4
 gcm_gmult_v8:
-___
-$code.=<<___	if ($flavour =~ /64/);
 	AARCH64_VALID_CALL_TARGET
-___
-$code.=<<___;
 	vld1.64		{$t1},[$Xi]		@ load Xi
 	vmov.i8		$xC2,#0xe1
 	vld1.64		{$H-$Hhl},[$Htbl]	@ load twisted H, ...
@@ -207,8 +199,6 @@ $code.=<<___;
 .type	gcm_ghash_v8,%function
 .align	4
 gcm_ghash_v8:
-___
-$code.=<<___	if ($flavour =~ /64/);
 	AARCH64_VALID_CALL_TARGET
 ___
 $code.=<<___		if ($flavour !~ /64/);