Refactor remove redundant `entity_name`
Refactor remove `entity_name_camelize`, use Entity#name
Refactor use Entity#token_header_name

And remove redundant `entity_token_header_name`
Refactor use Entity#identifier_header_name

And remove redundant `entity_identifier_header_name`
Refactor use Entity#identifier/token_params_name

And remove redundant methods `entity_identifier/token_header_name`