remove travis CI build canceler

- now a built-in feature of Travis-CI

Author: MartinNowak

README.md

@@ -10,8 +10,6 @@ Features
 
 - [Automated bugzilla, github, and trello references](#automated-references)
 - [Auto-merging approved & passing PRs](#auto-merge)
-- [Canceling stale Travis-CI builds](#canceling-stale)
-
 
 <a name="automated-references" />
 
@@ -101,10 +99,3 @@ _Note_: at the moment the Dlang-Bot doesn't store _any_ authentication token, so
 it can't perform actions on behalf of others.
 
 <a name="canceling-state" />
-
-Canceling stale Travis-CI builds
---------------------------------
-
-To avoid wasteful resource consumption with Travis CI,
-the Dlang-Bot will automatically cancel the previous, possibly running build of
-a PR on a new commit event (push or synchronization by a user).

source/dlangbot/app.d

@@ -1,11 +1,10 @@
 module dlangbot.app;
 
-import dlangbot.bugzilla, dlangbot.github, dlangbot.travis, dlangbot.trello,
+import dlangbot.bugzilla, dlangbot.github, dlangbot.trello,
        dlangbot.utils;
 
 public import dlangbot.bugzilla : bugzillaURL;
 public import dlangbot.github   : githubAPIURL, githubAuth, hookSecret;
-public import dlangbot.travis   : travisAPIURL;
 public import dlangbot.trello   : trelloAPIURL, trelloAuth, trelloSecret;
 
 string cronDailySecret;
@@ -45,7 +44,6 @@ shared static this()
     trelloSecret = environment["TRELLO_SECRET"];
     trelloAuth = "key="~environment["TRELLO_KEY"]~"&token="~environment["TRELLO_TOKEN"];
     hookSecret = environment["GH_HOOK_SECRET"];
-    travisAuth = "token " ~ environment["TRAVIS_TOKEN"];
     cronDailySecret = environment["CRON_DAILY_SECRET"];
 
     // workaround for stupid openssl.conf on Heroku
@@ -214,7 +212,4 @@ void handlePR(string action, PullRequest* _pr)
 
     if (runTrello)
         updateTrelloCard(action, pr.htmlURL, refs, descs);
-
-    // wait until builds for the current push are created
-    setTimer(30.seconds, { dedupTravisBuilds(action, pr.repoSlug, pr.number); });
 }

source/dlangbot/travis.d

@@ -65,7 +65,6 @@ void startFakeAPIServer()
 
     githubAPIURL = fakeAPIServerURL ~ "/github";
     trelloAPIURL = fakeAPIServerURL ~ "/trello";
-    travisAPIURL = fakeAPIServerURL ~ "/travis";
     bugzillaURL = fakeAPIServerURL ~ "/bugzilla";
 }