Don't reference Explorer types in EthereumJSONRPC

EthereumJSONRPC is not supposed to depend on Explorer at a code level,
it should at most cross reference it in docs.

apps/ethereum_jsonrpc/lib/ethereum_jsonrpc.ex

@@ -44,6 +44,11 @@ defmodule EthereumJSONRPC do
   """
   @type address :: String.t()
 
+  @typedoc """
+  A block number as an Elixir `t:non_neg_integer/0` instead of `t:data/0`.
+  """
+  @type block_number :: non_neg_integer()
+
   @typedoc """
   Binary data encoded as a single hexadecimal number in a `String.t`
   """

apps/ethereum_jsonrpc/lib/ethereum_jsonrpc/receipt.ex

@@ -7,7 +7,6 @@ defmodule EthereumJSONRPC.Receipt do
   import EthereumJSONRPC, only: [quantity_to_integer: 1]
 
   alias EthereumJSONRPC.Logs
-  alias Explorer.Chain.Transaction.Status
 
   @type elixir :: %{String.t() => String.t() | non_neg_integer}
 
@@ -39,6 +38,12 @@ defmodule EthereumJSONRPC.Receipt do
             | nil
         }
 
+  @typedoc """
+   * `:ok` - transaction succeeded
+   * `:error` - transaction failed
+  """
+  @type status :: :ok | :error
+
   @doc """
   Get `t:EthereumJSONRPC.Logs.elixir/0` from `t:elixir/0`
   """
@@ -110,7 +115,7 @@ defmodule EthereumJSONRPC.Receipt do
           cumulative_gas_used: non_neg_integer,
           gas_used: non_neg_integer,
           created_contract_address_hash: String.t() | nil,
-          status: Status.t(),
+          status: status(),
           transaction_hash: String.t(),
           transaction_index: non_neg_integer()
         }