How can I change this file to only be the lens flare shaders?

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So, lately, I've found that I love the look of lens flares in shaders, but, all the shaders with them also have shadows and stuff like that. I was wondering how to get only lens flares in Docteurdreads shaders, henceforth reducing lag drastically. I basically want to know what I could delete out of this zip file to have only the lens flares. Here is the shaders zip file.
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How do you make a lens flare in Minecraft?
Unity contains a couple of pre-configured Flares in the Standard Assets package. Otherwise, create an empty GameObject with GameObject->Create Empty from the menu bar and add the Lens Flare Component to it with Component->Effects->Lens Flare. Then choose the Flare in the Inspector.How do you make a lens flare in unity?
A lens flare happens when light is scattered or flared in a lens system, often in response to a bright light, producing a sometimes undesirable artifact in the image.Action - Working with Lens Flare Presets - Flame 2017
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