How important is creating Core Module in angular applications in design point of view

|-- app |-- modules |-- home |-- [+] components |-- [+] pages |-- home-routing.module.ts |-- home.module.ts |-- core |-- [+] authentication |-- [+] footer |-- [+] guards |-- [+] http |-- [+] interceptors |-- [+] mocks |-- [+] services |-- [+] header |-- core.module.ts |-- ensureModuleLoadedOnceGuard.ts |-- logger.service.ts | |-- shared |-- [+] components |-- [+] directives |-- [+] pipes | |-- [+] configs

I have followed this kind of angular app design.Someone is suggesting me to remove CoreModule. How important is CoreModule in angular App.