Drop deprecated irc channel

.travis.yml

@@ -1,11 +1,18 @@
 language: node_js
+
 node_js:
 - "node"
+
+cache:
+  yarn: true
+
 script: yarn run $SCRIPT
+
 stages:
   - name: test
   - name: release
     if: tag =~ ^v\d
+
 jobs:
   include:
       - env: SCRIPT=lint
@@ -32,18 +39,3 @@ jobs:
             on:
               tags: true
               branch: master
-cache:
-  yarn: true
-notifications:
-  email:
-    on_failure: always
-    on_success: change
-  irc:
-    channels:
-    - chat.freenode.net#hearthsim-commits
-    use_notice: true
-    skip_join: true
-    on_failure: always
-    on_success: change
-    template:
-    - "(%{branch} @ %{commit} : %{author}): %{message} %{build_url}"