Do not store token_hash as address_hash in token balances

We don't need this extraction because it will try to fetch the balance
from the own token in its contract and it doesn't make sense for us.

We will stop to store a lot of unnecessary data removing this
extraction.

apps/indexer/lib/indexer/address/token_balances.ex

@@ -30,11 +30,6 @@ defmodule Indexer.Address.TokenBalances do
         token_contract_address_hash: token_contract_address_hash,
         block_number: block_number
       })
-      |> MapSet.put(%{
-        address_hash: token_contract_address_hash,
-        token_contract_address_hash: token_contract_address_hash,
-        block_number: block_number
-      })
     end)
   end
 

apps/indexer/test/indexer/address/token_balances_test.exs

@@ -29,7 +29,7 @@ defmodule Indexer.Address.TokenBalancesTest do
 
       params_set = TokenBalances.params_set(%{token_transfers_params: [token_transfer_params]})
 
-      assert MapSet.size(params_set) == 3
+      assert MapSet.size(params_set) == 2
       assert %{address_hash: from_address_hash, block_number: block_number}
       assert %{address_hash: to_address_hash, block_number: block_number}
       assert %{address_hash: token_contract_address_hash, block_number: block_number}