Remove unused Chain.address_count function and format/credo appeasement

apps/explorer/lib/explorer/chain.ex

@@ -69,7 +69,7 @@ defmodule Explorer.Chain do
 
   Estimated count of addresses
   """
-  @spec address_estimated_count() :: non_neg_integer()
+  @spec address_estimated_count :: non_neg_integer()
   def address_estimated_count do
     %Postgrex.Result{rows: [[rows]]} =
       SQL.query!(Repo, "SELECT reltuples::BIGINT AS estimate FROM pg_class WHERE relname='addresses'")
@@ -188,12 +188,11 @@ defmodule Explorer.Chain do
     |> Repo.all()
   end
 
-
   @doc """
   The average time it took to mine/validate the last <= 100 `t:Explorer.Chain.Block.t/0`
   """
-  @spec average_block_time() :: non_neg_integer()
-  def average_block_time() do
+  @spec average_block_time :: %Timex.Duration{}
+  def average_block_time do
     {:ok, %Postgrex.Result{rows: [[rows]]}} =
       SQL.query(
         Repo,
@@ -652,23 +651,6 @@ defmodule Explorer.Chain do
     Import.all(options)
   end
 
-  @doc """
-  The number of `t:Explorer.Chain.Address.t/0`.
-
-      iex> insert_list(2, :address)
-      iex> Explorer.Chain.address_count()
-      2
-
-  When there are no `t:Explorer.Chain.Address.t/0`, the count is `0`.
-
-      iex> Explorer.Chain.address_count()
-      0
-
-  """
-  def address_count do
-    Repo.aggregate(Address, :count, :hash)
-  end
-
   @doc """
   The number of `t:Explorer.Chain.InternalTransaction.t/0`.
 

apps/explorer_web/lib/explorer_web/controllers/chain_controller.ex

@@ -1,8 +1,7 @@
 defmodule ExplorerWeb.ChainController do
   use ExplorerWeb, :controller
 
-  alias Explorer.{PagingOptions, Repo}
-  alias Explorer.Chain
+  alias Explorer.{Chain, PagingOptions, Repo}
   alias Explorer.Chain.{Address, Block, Transaction}
   alias Explorer.ExchangeRates.Token
   alias Explorer.Market

apps/explorer_web/test/explorer_web/features/viewing_chain_test.exs

@@ -30,6 +30,7 @@ defmodule ExplorerWeb.ViewingChainTest do
   describe "statistics" do
     test "average block time live updates", %{session: session} do
       time = DateTime.utc_now()
+
       for x <- 100..0 do
         insert(:block, timestamp: Timex.shift(time, seconds: -5 * x), number: x + 500)
       end
@@ -40,7 +41,7 @@ defmodule ExplorerWeb.ViewingChainTest do
 
       block =
         100..0
-        |> Enum.map(fn(index) ->
+        |> Enum.map(fn index ->
           insert(:block, timestamp: Timex.shift(time, seconds: -10 * index), number: index + 800)
         end)
         |> hd()

apps/explorer_web/test/support/fake_adapter.ex

@@ -2,7 +2,7 @@ defmodule ExplorerWeb.FakeAdapter do
   alias Explorer.Chain.Address
   alias Explorer.Repo
 
-  def address_estimated_count() do
+  def address_estimated_count do
     Repo.aggregate(Address, :count, :hash)
   end
 end