crypto/x509: remove ios build tag restriction

Fixes #49435

Change-Id: I77ce12f447e727e7dc3b23de947357c27a268bd2
Reviewed-on: https://go-review.googlesource.com/c/go/+/362294
Trust: Roland Shoemaker <roland@golang.org>
Run-TryBot: Roland Shoemaker <roland@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>

src/crypto/x509/internal/macos/corefoundation.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build darwin && !ios
+//go:build darwin
 
 // Package macOS provides cgo-less wrappers for Core Foundation and
 // Security.framework, similarly to how package syscall provides access to

src/crypto/x509/internal/macos/corefoundation.s

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build darwin && !ios
+//go:build darwin
 
 #include "textflag.h"
 

src/crypto/x509/internal/macos/security.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build darwin && !ios
+//go:build darwin
 
 package macOS
 

src/crypto/x509/internal/macos/security.s

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build darwin && !ios
+//go:build darwin
 
 #include "textflag.h"