Is there a way to change the name by removing spaces in a large number of layers at once?

Hello.
I have a lot of icons with different names and spaces in them. 
I need to remove the "Pixel/Solid/" in the name, leaving only the final name of the icon, and also remove the spaces where they are present.
I read the information about renaming, and there was an option with variables, but after trying it, nothing worked for me.