go/build: in TestDependencies, crypto/tls does not use cgo

Change-Id: Id164a099e0ac8bd231ee7ed8d7b7a34c91f5f68f
Reviewed-on: https://go-review.googlesource.com/16991
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Crawshaw <crawshaw@golang.org>

src/go/build/deps_test.go

@@ -337,7 +337,7 @@ var pkgDeps = map[string][]string{
 
 	// SSL/TLS.
 	"crypto/tls": {
-		"L4", "CRYPTO-MATH", "CGO", "OS",
+		"L4", "CRYPTO-MATH", "OS",
 		"container/list", "crypto/x509", "encoding/pem", "net", "syscall",
 	},
 	"crypto/x509": {