fix earthfile

Author: Mr-Leshiy

docs/src/architecture/08_concepts/catalyst_voting/cddl/Earthfile

@@ -10,10 +10,8 @@ check-cddl:
     COPY ./gen_vote_tx.cddl \
          ./vote_tx_v2_public.cddl \
          ./vote_tx_v2_private.cddl \
-         ./gen_vote_tx_cose_payload.cddl \
         .
 
-    RUN cddlc -2 gen_vote_tx_cose_payload.cddl
     RUN cddlc -2 gen_vote_tx.cddl
     RUN cddlc -2 vote_tx_v2_public.cddl
     RUN cddlc -2 vote_tx_v2_private.cddl