Resource Editor: How To Delete A Resource
Select the item to be deleted (e.g. Icon) in the Resource Tree view. Press the Delete button on the tool bar or use the hotkey combination [Shift-Ctrl-D]. Items selected for deletion are indicated by the red x marker.

To restore deleted items, use the Undelete button on the toolbar or use the hotkey combination [Shift-Ctrl-Z].
Changes are made permanent only after you have saved them to the file.
Select 'File' -> 'Save File As ...' to save the changes you've just made to the target file. If warned that the image size has changed, click Yes to update the file size.

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