If using Penumbra, restarting the game might be necessary to load the changes
A simple texture mod that removes the cogs from macro icons for both normal and 4K resolutions.
If this ever breaks, i will most likely be updating it as i'm using it myself. If not, you can recreate this by editing the files "iconA_frame" and "iconA_frame_hr1" in Photoshop/Gimp. Essentially painting the cog portion of the "Alpha" layers black (indicating transparency). Exporting and importing via textools.