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

This reverts commit 2abe85b8344de1102c1589a9ac9421a8b296f2b5.

test/javascripts/lib/search-test.js

@@ -1,60 +0,0 @@
-import {
-  translateResults,
-  searchContextDescription
-} from "discourse/lib/search";
-
-QUnit.module("lib:search");
-
-QUnit.test("unescapesEmojisInBlurbs", assert => {
-  const source = {
-    posts: [
-      {
-        id: 160,
-        username: "pmusaraj",
-        avatar_template: "/user_avatar/localhost/pmusaraj/{size}/3_2.png",
-        created_at: "2019-07-22T03:47:04.864Z",
-        like_count: 1,
-        blurb: ":thinking: This here is a test of emojis in search blurbs.",
-        post_number: 1,
-        topic_id: 41
-      }
-    ],
-    topics: [],
-    users: [],
-    categories: [],
-    tags: [],
-    groups: [],
-    grouped_search_result: false
-  };
-
-  const results = translateResults(source);
-  const blurb = results.posts[0].get("blurb");
-
-  assert.ok(blurb.indexOf("thinking.png"));
-  assert.ok(blurb.indexOf("<img src") === 0);
-  assert.ok(blurb.indexOf(":thinking:") === -1);
-});
-
-QUnit.test("searchContextDescription", assert => {
-  assert.equal(
-    searchContextDescription("topic"),
-    I18n.t("search.context.topic")
-  );
-  assert.equal(
-    searchContextDescription("user", "silvio.dante"),
-    I18n.t("search.context.user", { username: "silvio.dante" })
-  );
-  assert.equal(
-    searchContextDescription("category", "staff"),
-    I18n.t("search.context.category", { category: "staff" })
-  );
-  assert.equal(
-    searchContextDescription("tag", "important"),
-    I18n.t("search.context.tag", { tag: "important" })
-  );
-  assert.equal(
-    searchContextDescription("private_messages"),
-    I18n.t("search.context.private_messages")
-  );
-  assert.equal(searchContextDescription("bad_type"), null);
-});