[monitoring-plugins] travis-ci: Remove backports ppa

[Jan Wagner]

 Module: monitoring-plugins
 Branch: master
 Commit: a8d96ce2c6bd5ed10b77ac0fe4cb6979c7027e19
 Author: Jan Wagner <waja at cyconet.org>
   Date: Sat Feb  2 16:47:07 2019 +0100
    URL: https://www.monitoring-plugins.org/repositories/monitoring-plugins/commit/?id=a8d96ce

travis-ci: Remove backports ppa

---

 .travis.yml | 1 -
 1 file changed, 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index dce12f5..d7716fa 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -39,7 +39,6 @@ before_install:
   - "sudo killall -9 ntpd ||:"
   # Trusty has no swap, lets create some
   - sudo fallocate -l 20M /swapfile; sudo chmod 600 /swapfile; sudo mkswap /swapfile; sudo swapon /swapfile
-  - sudo add-apt-repository -y ppa:waja/trusty-backports
   - sudo apt-get update -qq
   - sudo apt-get purge -qq gawk