bug fix on parameter in eos_config

The eos_config module has a bug where its trying to pass an argument
that doesn't exist.  This fixes that problem, removing the offending
keywork argment

lib/ansible/modules/network/eos/eos_config.py

@@ -211,7 +211,6 @@ def main():
     )
 
     module = get_module(argument_spec=argument_spec,
-                        mutually_exclusive=mutually_exclusive,
                         supports_check_mode=True)
 
     lines = module.params['lines']