[O] How to advice around org-insert-link to disable desc part of link?

[stardiviner]

I use org-attach to add/download image file from local or web url. Then [C-c 
C-l] (org-insert-link) to insert link from previous added attach image file.

In some places like ox-html, ox-epub, they use inline images without desc to 
display image. If has `[desc]` part, the image will become a link. So I hope 
can add an advice around function `org-insert-link` or somewhere should.

Anybody knows how to do this? Can you show the code? I checked out 
`org-insert-link` source code, don't know how to add advice around it.

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[ stardiviner ]
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