Do not set deposit_requests_start_index in fork helper (#5329)

Author: jtraglia

tests/core/pyspec/eth_consensus_specs/test/helpers/fork_transition.py

@@ -35,7 +35,6 @@
     get_previous_fork_version,
     is_post_bellatrix,
     is_post_electra,
-    is_post_fulu,
     is_post_gloas,
 )
 from eth_consensus_specs.test.helpers.proposer_slashings import (
@@ -199,14 +198,6 @@ def do_fork(
     assert state.slot % spec.SLOTS_PER_EPOCH == 0
     assert spec.get_current_epoch(state) == fork_epoch
 
-    # The Eth1 bridge transition is complete before the Fulu fork. Tests do not
-    # process real deposit requests in pre-fork blocks, so model that completion here.
-    if (
-        is_post_fulu(post_spec)
-        and state.deposit_requests_start_index == spec.UNSET_DEPOSIT_REQUESTS_START_INDEX
-    ):
-        state.deposit_requests_start_index = state.eth1_data.deposit_count
-
     state = get_upgrade_fn(post_spec, post_spec.fork)(state)
 
     assert state.fork.epoch == fork_epoch
@@ -236,14 +227,6 @@ def do_fork_generate(
     assert state.slot % spec.SLOTS_PER_EPOCH == 0
     assert spec.get_current_epoch(state) == fork_epoch
 
-    # The Eth1 bridge transition is complete before the Fulu fork. Tests do not
-    # process real deposit requests in pre-fork blocks, so model that completion here.
-    if (
-        is_post_fulu(post_spec)
-        and state.deposit_requests_start_index == spec.UNSET_DEPOSIT_REQUESTS_START_INDEX
-    ):
-        state.deposit_requests_start_index = state.eth1_data.deposit_count
-
     yield "pre", state
 
     state = get_upgrade_fn(post_spec, post_spec.fork)(state)