why main class is now a coremod wtf

gradle.properties

@@ -50,10 +50,10 @@ mixinsPackage =
 # Specify the core mod entry class if you use a core mod. This class must implement IFMLLoadingPlugin!
 # This parameter is for legacy compatability only
 # Example value: coreModClass = asm.FMLPlugin + modGroup = com.myname.mymodid -> com.myname.mymodid.asm.FMLPlugin
-coreModClass = lib.tool.Main
+coreModClass =
 # If your project is only a consolidation of mixins or a core mod and does NOT contain a 'normal' mod ( = some class
 # that is annotated with @Mod) you want this to be true. When in doubt: leave it on false!
-containsMixinsAndOrCoreModOnly = true
+containsMixinsAndOrCoreModOnly =
 
 # If enabled, you may use 'shadowImplementation' for dependencies. They will be integrated in your jar. It is your
 # responsibility check the licence and request permission for distribution, if required.