fix empty execution payload

Author: KatyaRyazantseva

tests/core/pyspec/eth2spec/test/helpers/execution_payload.py

@@ -358,7 +358,7 @@ def build_empty_execution_payload(spec, state, randao_mix=None):
         payload.gas_limit = latest.gas_limit  # retain same limit
         payload.base_fee_per_gas = latest.base_fee_per_gas  # retain same base_fee
     if is_post_capella(spec):
-        payload.withdrawals = get_expected_withdrawals(spec, state)
+        payload.withdrawals = []
     if is_post_deneb(spec):
         payload.blob_gas_used = 0
         payload.excess_blob_gas = 0