Remove autogenerated home route

Renders records instead.

test/music_library_web/controllers/page_controller_test.exs

@@ -1,8 +0,0 @@
-defmodule MusicLibraryWeb.PageControllerTest do
-  use MusicLibraryWeb.ConnCase
-
-  test "GET /", %{conn: conn} do
-    conn = get(conn, ~p"/")
-    assert html_response(conn, 200) =~ "Peace of mind from prototype to production"
-  end
-end