Removed function needed in next PRs but not used

Author: rodrigo-o

lib/lambda_ethereum_consensus/validator/utils.ex

@@ -101,18 +101,4 @@ defmodule LambdaEthereumConsensus.Validator.Utils do
               "Invalid epoch #{epoch}, should be in the current or next sync committee period"
     end
   end
-
-  @spec sync_committee_aggregator?(Types.bls_signature()) :: boolean()
-  def sync_committee_aggregator?(signature) do
-    modulo =
-      ChainSpec.get("SYNC_COMMITTEE_SIZE")
-      |> div(Constants.sync_committee_subnet_count())
-      |> div(Constants.target_aggregators_per_sync_subcommittee())
-      |> max(1)
-
-    SszEx.hash(signature)
-    |> binary_part(0, 8)
-    |> :binary.decode_unsigned(:little)
-    |> rem(modulo) == 0
-  end
 end