change golang.org/x/net to be the same revision as used in kubernetes

vendor/golang.org/x/net/html/node.go

@@ -21,10 +21,9 @@ const (
 	scopeMarkerNode
 )
 
-// Section 12.2.4.3 says "The markers are inserted when entering applet,
-// object, marquee, template, td, th, and caption elements, and are used
-// to prevent formatting from "leaking" into applet, object, marquee,
-// template, td, th, and caption elements".
+// Section 12.2.3.3 says "scope markers are inserted when entering applet
+// elements, buttons, object elements, marquees, table cells, and table
+// captions, and are used to prevent formatting from 'leaking'".
 var scopeMarker = Node{Type: scopeMarkerNode}
 
 // A Node consists of a NodeType and some Data (tag name for element nodes,
@@ -174,16 +173,6 @@ func (s *nodeStack) index(n *Node) int {
 	return -1
 }
 
-// contains returns whether a is within s.
-func (s *nodeStack) contains(a atom.Atom) bool {
-	for _, n := range *s {
-		if n.DataAtom == a {
-			return true
-		}
-	}
-	return false
-}
-
 // insert inserts a node at the given index.
 func (s *nodeStack) insert(i int, n *Node) {
 	(*s) = append(*s, nil)
@@ -202,19 +191,3 @@ func (s *nodeStack) remove(n *Node) {
 	(*s)[j] = nil
 	*s = (*s)[:j]
 }
-
-type insertionModeStack []insertionMode
-
-func (s *insertionModeStack) pop() (im insertionMode) {
-	i := len(*s)
-	im = (*s)[i-1]
-	*s = (*s)[:i-1]
-	return im
-}
-
-func (s *insertionModeStack) top() insertionMode {
-	if i := len(*s); i > 0 {
-		return (*s)[i-1]
-	}
-	return nil
-}