net/http: remove unused function

Change-Id: I4364d94663282249e632d12026a810147844ad2e
Reviewed-on: https://go-review.googlesource.com/c/go/+/530615
Run-TryBot: Jonathan Amsterdam <[email protected]>
TryBot-Result: Gopher Robot <[email protected]>
Reviewed-by: Damien Neil <[email protected]>

Author: jba

src/net/http/pattern.go

@@ -180,20 +180,6 @@ func parsePattern(s string) (_ *pattern, err error) {
 	return p, nil
 }
 
-// TODO(jba): remove this; it is unused.
-func isValidHTTPToken(s string) bool {
-	if s == "" {
-		return false
-	}
-	// See https://www.rfc-editor.org/rfc/rfc9110#section-5.6.2.
-	for _, r := range s {
-		if !unicode.IsLetter(r) && !unicode.IsDigit(r) && !strings.ContainsRune("!#$%&'*+.^_`|~-", r) {
-			return false
-		}
-	}
-	return true
-}
-
 func isValidWildcardName(s string) bool {
 	if s == "" {
 		return false

src/net/http/pattern_test.go

@@ -145,26 +145,6 @@ func (p1 *pattern) equal(p2 *pattern) bool {
 		slices.Equal(p1.segments, p2.segments)
 }
 
-func TestIsValidHTTPToken(t *testing.T) {
-	for _, test := range []struct {
-		in   string
-		want bool
-	}{
-		{"", false},
-		{"GET", true},
-		{"get", true},
-		{"white space", false},
-		{"#!~", true},
-		{"a-b1_2", true},
-		{"notok)", false},
-	} {
-		got := isValidHTTPToken(test.in)
-		if g, w := got, test.want; g != w {
-			t.Errorf("%q: got %t, want %t", test.in, g, w)
-		}
-	}
-}
-
 func mustParsePattern(tb testing.TB, s string) *pattern {
 	tb.Helper()
 	p, err := parsePattern(s)