Removed travis file because it uses precise which is too ancient to work.

.travis.yml

@@ -1,12 +0,0 @@
-language: cpp
-compiler:
-  - gcc
-before_install:
-  - sudo apt-get update
-  - sudo apt-get install -y python python3 gobjc gobjc++ gnustep-make libboost-dev libboost-thread-dev qt5-default qtbase5-dev-tools qtbase5-dev libgtest-dev google-mock gobject-introspection libgirepository1.0-dev flex bison protobuf-compiler libprotobuf-dev zlib1g-dev
-before_script:
-  - wget https://github.com/martine/ninja/archive/v1.5.3.zip
-  - unzip v1.5.3.zip
-  - cd ninja-1.5.3 && ./configure --bootstrap && cd ..
-  - export PATH=$PWD/ninja-1.5.3:$PATH
-script: ./run_tests.py