Is there a way to not include UnityCrashHandler.exe in build

Sorry. I didn't see your comment until now. I still hope this helps from what I can understand, crash handlers are used for giving the users messages for crashes. If you take this out, the game should run perfectly, but I don't know what will happen if the game crashes. If you want, you can make a project that will crash and run the project with the handler and without the handler and compare them.