Drop configoptional changes

Author: swiatekm

config/configoptional/optional.go

@@ -111,17 +111,6 @@ func (o Optional[T]) HasValue() bool {
 	return o.flavor == someFlavor
 }
 
-// IsNone returns true if the Optional has no value.
-// This is the case both for the zero value and for Optional values created with None().
-// An Optional created with Default() or Some() is not None.
-//
-// Most callers only need [HasValue]. IsNone is useful when "not explicitly configured"
-// (Default) and "explicitly disabled" (None) must be treated differently — for example,
-// when a feature is enabled by default but can be explicitly turned off.
-func (o Optional[T]) IsNone() bool {
-	return o.flavor == noneFlavor
-}
-
 // Get returns the value of the Optional.
 // If the value is not present, it returns nil.
 func (o *Optional[T]) Get() *T {

config/configoptional/optional_test.go

@@ -154,13 +154,6 @@ func TestNone(t *testing.T) {
 	assert.Equal(t, &zeroVal, ret)
 }
 
-func TestIsNone(t *testing.T) {
-	assert.True(t, None[Sub]().IsNone())
-	assert.True(t, (Optional[Sub]{}).IsNone()) // zero value is None
-	assert.False(t, Some(Sub{}).IsNone())
-	assert.False(t, Default(Sub{}).IsNone())
-}
-
 func ExampleNone() {
 	type Person struct {
 		Name string