Drop unused golang/template funcs

Kubernetes-commit: 7a261d9fa0edc0a8e615bd6bf81e8e3a5276f4fb

third_party/forked/golang/template/exec.go

@@ -53,42 +53,3 @@ func printableValue(v reflect.Value) (interface{}, bool) {
  }
  return v.Interface(), true
 }
-
-// canBeNil reports whether an untyped nil can be assigned to the type. See reflect.Zero.
-func canBeNil(typ reflect.Type) bool {
- switch typ.Kind() {
- case reflect.Chan, reflect.Func, reflect.Interface, reflect.Map, reflect.Ptr, reflect.Slice:
- return true
- }
- return false
-}
-
-// isTrue reports whether the value is 'true', in the sense of not the zero of its type,
-// and whether the value has a meaningful truth value.
-func isTrue(val reflect.Value) (truth, ok bool) {
- if !val.IsValid() {
- // Something like var x interface{}, never set. It's a form of nil.
- return false, true
- }
- switch val.Kind() {
- case reflect.Array, reflect.Map, reflect.Slice, reflect.String:
- truth = val.Len() > 0
- case reflect.Bool:
- truth = val.Bool()
- case reflect.Complex64, reflect.Complex128:
- truth = val.Complex() != 0
- case reflect.Chan, reflect.Func, reflect.Ptr, reflect.Interface:
- truth = !val.IsNil()
- case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
- truth = val.Int() != 0
- case reflect.Float32, reflect.Float64:
- truth = val.Float() != 0
- case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
- truth = val.Uint() != 0
- case reflect.Struct:
- truth = true // Struct values are always true.
- default:
- return
- }
- return truth, true
-}