Revert "Rename all test files from JS -> ES6"

This reverts commit 2abe85b834.

test/javascripts/models/user-drafts-test.js

@@ -1,32 +0,0 @@
-import UserDraft from "discourse/models/user-draft";
-import { NEW_TOPIC_KEY } from "discourse/models/composer";
-import User from "discourse/models/user";
-
-QUnit.module("model:user-drafts");
-
-QUnit.test("stream", assert => {
-  const user = User.create({ id: 1, username: "eviltrout" });
-  const stream = user.get("userDraftsStream");
-  assert.present(stream, "a user has a drafts stream by default");
-  assert.equal(stream.get("itemsLoaded"), 0, "no items are loaded by default");
-  assert.blank(stream.get("content"), "no content by default");
-});
-
-QUnit.test("draft", assert => {
-  const drafts = [
-    UserDraft.create({
-      draft_key: "topic_1",
-      post_number: "10"
-    }),
-    UserDraft.create({
-      draft_key: NEW_TOPIC_KEY
-    })
-  ];
-
-  assert.equal(drafts.length, 2, "drafts count is right");
-  assert.equal(
-    drafts[1].get("draftType"),
-    I18n.t("drafts.new_topic"),
-    "loads correct draftType label"
-  );
-});