Is there a way to remove all unused theme variables, icons, and fonts?

Just trying to figure out how to make app lighter. There are also probably many system variables I do not need to use. Is there a way to remove all unused variables? Also, are all of the icons in the composer builder included in app resources, or only the ones used when the apps are built?

I “think” variables that are not used in the app are not included in the build, so don´t worry about them. This is certainly true of images loaded into the library, which is why you don´t need to worry about removing unused ones.