remove unused actionforchange (#32759)

internal/plans/objchange/action.go

@@ -1,40 +0,0 @@
-package objchange
-
-import (
-	"github.com/zclconf/go-cty/cty"
-
-	"github.com/hashicorp/terraform/internal/plans"
-)
-
-// ActionForChange determines which plans.Action value best describes a
-// change from the value given in before to the value given in after.
-//
-// Because it has no context aside from the values, it can only return the
-// basic actions NoOp, Create, Update, and Delete. Other codepaths with
-// additional information might make this decision differently, such as by
-// using the Replace action instead of the Update action where that makes
-// sense.
-//
-// If the after value is unknown then the action can't be properly decided, and
-// so ActionForChange will conservatively return either Create or Update
-// depending on whether the before value is null. The before value must always
-// be fully known; ActionForChange will panic if it contains any unknown values.
-func ActionForChange(before, after cty.Value) plans.Action {
-	switch {
-	case !after.IsKnown():
-		if before.IsNull() {
-			return plans.Create
-		}
-		return plans.Update
-	case after.IsNull() && before.IsNull():
-		return plans.NoOp
-	case after.IsNull() && !before.IsNull():
-		return plans.Delete
-	case before.IsNull() && !after.IsNull():
-		return plans.Create
-	case after.RawEquals(before):
-		return plans.NoOp
-	default:
-		return plans.Update
-	}
-}