Drop Travis CI

.travis.yml

@@ -1,34 +0,0 @@
-language: cpp
-
-matrix:
-  include:
-    - os: linux
-      sudo: false
-      dist: trusty
-      addons:
-        apt:
-          packages:
-            - libxtst-dev
-            - qtdeclarative5-dev
-            - libavahi-compat-libdnssd-dev
-      script: sh -x ./clean_build.sh
-
-    - os: osx
-      osx_image: xcode9
-      script:
-        - export COLUMNS=80
-        - curl -LO https://raw.githubusercontent.com/GiovanniBussi/macports-ci/master/macports-ci
-        - chmod +x ./macports-ci
-        - ./macports-ci install
-        - PATH="$PATH:/opt/local/bin"
-        - sudo port -N install qt5-qtbase openssl
-        - sh -x ./clean_build.sh
-
-    - os: osx
-      osx_image: xcode9
-      script:
-        - brew update
-        - brew install qt openssl
-        - sh -x ./clean_build.sh
-
-install: true