Revert citext user URI migration

URI paths are not actually case-insesitive, which caused migration issues
 on a number of databases.

Closes #2188

priv/repo/migrations/20200925065249_make_user_ids_ci.exs

@@ -1,19 +1,9 @@
 defmodule Pleroma.Repo.Migrations.MakeUserIdsCI do
   use Ecto.Migration
 
-  def up do
+  def change do
-    alter table(:users) do
+    # Migration retired, see
-      modify(:uri, :citext)
+    # https://git.pleroma.social/pleroma/pleroma/-/issues/2188
-    end
+    :noop
-
-    create(unique_index(:users, :uri))
-  end
-
-  def don do
-    drop(unique_index(:users, :uri))
-
-    alter table(:users) do
-      modify(:uri, :text)
-    end
   end
 end

priv/repo/migrations/20200928145912_revert_citext_change.exs

@@ -0,0 +1,11 @@
+defmodule Pleroma.Repo.Migrations.RevertCitextChange do
+  use Ecto.Migration
+
+  def change do
+    alter table(:users) do
+      modify(:uri, :text)
+    end
+
+    create_if_not_exists(unique_index(:users, :uri))
+  end
+end

test/user_search_test.exs

@@ -41,7 +41,7 @@ test "returns a user with matching uri as the first result" do
         insert(:user, %{
           nickname: "no_relation",
           ap_id: "https://lain.com/users/lain",
-          uri: "https://lain.com/@Lain"
+          uri: "https://lain.com/@lain"
         })
 
       _user = insert(:user, %{nickname: "com_user"})