Revert "Nested Folders: Fix fetching a folder by title" (#76469)

Revert "Nested Folders: Fix fetching a folder by title (#74725)"

This reverts commit 0eac9aff7f.

pkg/services/folder/model.go

@@ -125,15 +125,13 @@ type DeleteFolderCommand struct {
 
 // GetFolderQuery is used for all folder Get requests. Only one of UID, ID, or
 // Title should be set; if multiple fields are set by the caller the dashboard
-// service will select the field with the most specificity, in order: UID, ID
-// Title. If Title is set, it will fetch the folder in the root folder.
-// Callers can additionally set the ParentUID field to fetch a folder by title under a specific folder.
+// service will select the field with the most specificity, in order: ID, UID,
+// Title.
 type GetFolderQuery struct {
-	UID       *string
-	ParentUID *string
-	ID        *int64
-	Title     *string
-	OrgID     int64
+	UID   *string
+	ID    *int64
+	Title *string
+	OrgID int64
 
 	SignedInUser identity.Requester `json:"-"`
 }