refactor(modutils)!: remove all unused code by our main core projects

modutils code is very old and hard to evolved and maintained and it also depends of both imp and pkg_resources which are deprecated old modules that will be removed in the future from the core python libraby.

So starting by removing everything that is not needed is a first step to get ride of those problems.

This cleanup is based on this analysis:

List of used symbols

• LazyObject
• load_module_from_name
• clean_sys_modules
• cleanup_sys_modules
• load_module_from_file
• modpath_from_file

Internal symbols needed by the used symbols

LazyObject
    load_module_from_name
        load_module_from_modpath
            find_module[imp]
            load_module[imp]
            _is_namespace <- pkg_resources

load_module_from_file
    modpath_from_file (deprecated)
        _canonicalize_path
        _check_init

    load_module_from_modpath
        find_module[imp]
        load_module[imp]
        _is_namespace <- pkg_resources