Remove obsolete InvalidConsensus.Worker

This worker only handled one of invalid consensus cases, i.e. when a parent
block lost consensus, but the child one didn't.
Even then it worked only when all blocks are reliably and sequentially
imported (certainly not our case), and only once on indexer launch.

Now this particular case is covered by previous commit, and we don't need
this worker at all.

apps/explorer/lib/explorer/chain.ex

@@ -2638,24 +2638,6 @@ defmodule Explorer.Chain do
   @spec data() :: Dataloader.Ecto.t()
   def data, do: DataloaderEcto.new(Repo)
 
-  @doc """
-  Returns a list of block numbers with invalid consensus.
-  """
-  @spec list_block_numbers_with_invalid_consensus :: [integer()]
-  def list_block_numbers_with_invalid_consensus do
-    query =
-      from(
-        block in Block,
-        join: parent in Block,
-        on: parent.hash == block.parent_hash,
-        where: block.consensus == true,
-        where: parent.consensus == false,
-        select: parent.number
-      )
-
-    Repo.all(query, timeout: :infinity)
-  end
-
   def list_decompiled_contracts(limit, offset) do
     query =
       from(

apps/explorer/test/explorer/chain_test.exs

@@ -3667,27 +3667,6 @@ defmodule Explorer.ChainTest do
     end
   end
 
-  describe "list_block_numbers_with_invalid_consensus/0" do
-    test "returns a list of block numbers with invalid consensus" do
-      block1 = insert(:block)
-      block2_with_invalid_consensus = insert(:block, parent_hash: block1.hash, consensus: false)
-      _block2 = insert(:block, parent_hash: block1.hash, number: block2_with_invalid_consensus.number)
-      block3 = insert(:block, parent_hash: block2_with_invalid_consensus.hash)
-      block4 = insert(:block, parent_hash: block3.hash)
-      block5 = insert(:block, parent_hash: block4.hash)
-      block6_without_consensus = insert(:block, parent_hash: block5.hash, consensus: false)
-      block6 = insert(:block, parent_hash: block5.hash, number: block6_without_consensus.number)
-      block7 = insert(:block, parent_hash: block6.hash)
-      block8_with_invalid_consensus = insert(:block, parent_hash: block7.hash, consensus: false)
-      _block8 = insert(:block, parent_hash: block7.hash, number: block8_with_invalid_consensus.number)
-      block9 = insert(:block, parent_hash: block8_with_invalid_consensus.hash)
-      _block10 = insert(:block, parent_hash: block9.hash)
-
-      assert Chain.list_block_numbers_with_invalid_consensus() ==
-               [block2_with_invalid_consensus.number, block8_with_invalid_consensus.number]
-    end
-  end
-
   describe "block_combined_rewards/1" do
     test "sums the block_rewards values" do
       block = insert(:block)

apps/indexer/lib/indexer/block/supervisor.ex

@@ -4,7 +4,7 @@ defmodule Indexer.Block.Supervisor do
   """
 
   alias Indexer.Block
-  alias Indexer.Block.{Catchup, InvalidConsensus, Realtime, Reward, Uncle}
+  alias Indexer.Block.{Catchup, Realtime, Reward, Uncle}
   alias Indexer.Temporary.{AddressesWithoutCode, FailedCreatedAddresses}
 
   use Supervisor
@@ -50,7 +50,6 @@ defmodule Indexer.Block.Supervisor do
            %{block_fetcher: block_fetcher, block_interval: block_interval, memory_monitor: memory_monitor},
            [name: Catchup.Supervisor]
          ]},
-        {InvalidConsensus.Supervisor, [[], [name: InvalidConsensus.Supervisor]]},
         {Realtime.Supervisor,
          [
            %{block_fetcher: realtime_block_fetcher, subscribe_named_arguments: realtime_subscribe_named_arguments},