Dead Texture

In the scene I’m working on, I’ve come across a texture that no longer seems to be used at all. The only place I can see it is in the out liner, and there are no links to any other nodes there. Does anybody know how I can delete this texture?

An often asked question, I think.

Data with no links is dropped on saving and reloading the file.
if you want to see the effect immidiately you have to save (Ctrl+W) and reopen the last saved file (Ctrl+O).
see: the data is no longer there…