Excluding assets from build when added as part of AssetBundle

I have found this question asked multiple times but none seem to have an answer to fix it.

Basically what I want is -
I have a few assets to an asset bundle and are part of my project hierarchy. Now when I build the app, say for example for WebGL, the assets are still part of my WebGL build.

I don't want these assets to be part of my WebGL build because they are already part of an asset-bundle which I will be downloading and using at runtime.

Hope to get an answer to this..
Thanks!