message: [language] remove outdated function allows_equality
  Closes:
  Approved by: dariorussi
diff: @@ -661,23 +661,6 @@ impl SignatureToken {
  }
  }
  - /// Checks if the signature token is usable for Eq and Neq.
  - ///
  - /// Currently equality operations are only allowed on:
  - /// - Bool
  - /// - U64
  - /// - ByteArray
  - /// - Address
  - /// - Reference or Mutable reference to these types
  - pub fn allows_equality(&self) -> bool {
  - use SignatureToken::*;
  - match self {
  - Struct(_) | StructInstantiation(_, _) => false,
  - Reference(token) | MutableReference(token) => token.is_primitive(),
  - token => token.is_primitive(),
  - }
  - }
  -
  /// Returns true if the `SignatureToken` is any kind of reference (mutable and immutable).
  pub fn is_reference(&self) -> bool {
  use SignatureToken::*;
  