message: remove rfc from this pr
diff: - [RFC 1: Final check](./plonk/final_check.md)
  - [RFC 2: Maller's optimization for kimchi](./plonk/maller_15.md)
  - [RFC 3: Plookup integration in kimchi](./rfcs/3-lookup.md)
  -- [RFC 4: Foreign Field Addition](./rfcs/ffadd.md)
  # Specifications
  