message: Cleanup cosy utils, unused functions
diff: -use inflector::cases::snakecase::to_snake_case;
  use syn::{export::Span, Ident};
  -pub(crate) fn snake_ident(id: &Ident) -> Ident {
  - to_ident(&to_snake_case(&id.to_string()))
  -}
  -
  pub(crate) fn to_ident(s: &str) -> Ident {
  Ident::new(s, Span::call_site())
  }
  -pub(crate) fn suffix_ident(ident: &Ident, suffix: &str) -> Ident {
  /// Returns an ident with a suffix.
  +pub(crate) fn suffix_ident(ident: &Ident, suffix: &str) -> Ident {
  to_ident(&format!("{}{}", ident.to_string(), suffix))
  }
  