How to remove stroke from a transparent background?

I've been putting together a write on effect for a logo animation and want to export it with a transparent background. I've just noticed that once I remove the solid colour BG from the comp, the stroke outlines are still visible. When exporting the project using RGB + Alpha the strokes are still visible on the export and the letters write on over the top. Is there any way that I can hide the stroke from the comp? I've attached an image of the project which should show what I mean a bit better. I realise I've edited on the PS layers but didn't know how to transfer them to a normal solid layer. Any advice on that would also be appreciated.