CBMC: Correct called contracts in verify_pre_hash_internal

For some reason the previous (unrelated) commit caused the
verify_pre_hash_internal proof to fail due to extra functions in
USE_FUNCTION_CONTRACTS.
This commit removes the extra functions.

Signed-off-by: Matthias J. Kannwischer <[email protected]>

Author: mkannwischer

proofs/cbmc/crypto_sign_verify_pre_hash_internal/Makefile

@@ -20,14 +20,7 @@ PROOF_SOURCES += $(PROOFDIR)/$(HARNESS_FILE).c
 PROJECT_SOURCES += $(SRCDIR)/mldsa/src/sign.c
 
 CHECK_FUNCTION_CONTRACTS=$(MLD_NAMESPACE)verify_pre_hash_internal
-USE_FUNCTION_CONTRACTS=$(MLD_NAMESPACE)verify_internal \
-                       $(MLD_NAMESPACE)unpack_pk \
-                       $(MLD_NAMESPACE)unpack_sig \
-                       $(MLD_NAMESPACE)polyvec_matrix_expand \
-                       $(MLD_NAMESPACE)polyvecl_invntt_tomont \
-                       $(MLD_NAMESPACE)polyveck_invntt_tomont \
-                       $(MLD_NAMESPACE)polyveck_sub \
-                       $(MLD_NAMESPACE)polyveck_use_hint
+USE_FUNCTION_CONTRACTS=$(MLD_NAMESPACE)verify_internal
 USE_FUNCTION_CONTRACTS+=mld_zeroize
 
 APPLY_LOOP_CONTRACTS=on