html: disable print

Everything is incomplete.
Let's not make noise like this a habit.

R=nigeltao_gnome
CC=golang-dev
https://golang.org/cl/2272041

src/pkg/html/token.go

@@ -7,16 +7,10 @@ package html
 import (
 	"bytes"
 	"io"
-	"log"
 	"os"
 	"strconv"
 )
 
-func init() {
-	// TODO(nigeltao): Remove this when ready.
-	log.Stderr("The html package is incomplete; do not use for production software.")
-}
-
 // A TokenType is the type of a Token.
 type TokenType int