How to: Delete a Snippet Added to Your Code
Adding an IntelliSense Code Snippet to your code is considered a single edit by the Code Editor.
To delete a snippet immediately after insertion
Type CTRL+Z or choose Undo from the Edit menu.
You can "undo" an insertion in this way because the entire snippet is recognized as one unit by the Code Editor until the file has been closed.
To delete a snippet after it has been modified
Select the lines of code in the snippet that you want to delete.
Delete the lines using Cut from the Edit menu, CTRL+X, or DEL.
If you delete a snippet after it has been modified, any imports or references added in association with the snippet will remain in your project.