[Golang] Remove HTML Inline Style

package main

import (
      "golang.org/x/net/html"
      "os"
      "strings"
)

var testhtml = `
<table style="s1">
  <tr><td id="foo" style="s2">R1, C1</td><td>R1, C2</td></tr>
  <tr><td alt="hi">R2, C1</td><td style="s3">R2, C2</td></tr>
</table>`

func RemoveStyleAttr(n *html.Node) {
      i := -1
      for index, attr := range n.Attr {
              if attr.Key == "style" {
                      i = index
                      break
              }
      }
      if i != -1 {
              n.Attr = append(n.Attr[:i], n.Attr[i+1:]...)
      }

      for c := n.FirstChild; c != nil; c = c.NextSibling {
              RemoveStyleAttr(c)
      }
}

func main() {
      doc, err := html.Parse(strings.NewReader(testhtml))
      if err != nil {
              panic(err)
      }

      RemoveStyleAttr(doc)

      html.Render(os.Stdout, doc)
}