remove unnecessary addons

.travis.yml

@@ -16,30 +16,14 @@ env:
     # See https://git.io/vdao3 for details.
     - JOBS=1
 
-jobs:
-  fail_fast: true
-  allow_failures:
-    - env: EMBER_TRY_SCENARIO=ember-canary
-
   include:
     # runs linting and tests with current locked deps
 
     - stage: "Tests"
       name: "Tests"
       script:
-        - npm run lint:hbs
-        - npm run lint:js
-        - npm test
-
-    # we recommend new addons test the current and previous LTS
-    # as well as latest stable release (bonus points to beta/canary)
-    - stage: "Additional Tests"
-      env: EMBER_TRY_SCENARIO=ember-lts-2.16
-    - env: EMBER_TRY_SCENARIO=ember-lts-2.18
-    - env: EMBER_TRY_SCENARIO=ember-release
-    - env: EMBER_TRY_SCENARIO=ember-beta
-    - env: EMBER_TRY_SCENARIO=ember-canary
-    - env: EMBER_TRY_SCENARIO=ember-default-with-jquery
+        - yarn lint:js
+        - yarn test
 
 cache:
   yarn: true

package.json

@@ -31,7 +31,6 @@
   "main": "index.js",
   "scripts": {
     "build": "ember build",
-    "lint:hbs": "ember-template-lint .",
     "lint:js": "eslint .",
     "start": "ember serve",
     "test": "mocha node-tests --recursive",
@@ -44,7 +43,6 @@
     "walk-sync": "^0.3.0"
   },
   "devDependencies": {
-    "@ember/optional-features": "^0.6.3",
     "broccoli-asset-rev": "^2.7.0",
     "chai": "^4.0.2",
     "ember-cli": "~3.4.3",
@@ -56,7 +54,6 @@
     "ember-cli-inject-live-reload": "^1.8.2",
     "ember-cli-qunit": "^4.3.2",
     "ember-cli-sri": "^2.1.1",
-    "ember-cli-template-lint": "^1.0.0-beta.1",
     "ember-cli-uglify": "^2.1.0",
     "ember-disable-prototype-extensions": "^1.1.3",
     "ember-export-application-global": "^2.0.0",