remove .travis.yml until issues with boost 1.54 (default on ubuntu 14.04) have been fixed

.travis.yml

@@ -1,31 +0,0 @@
-language: generic
-sudo: false
-dist: trusty
-
-addons:
-  apt:
-    sources:
-      - boost-latest
-      - ubuntu-toolchain-r-test
-    packages:
-      - gcc-5
-      - g++-5
-      - libboost1.56-all-dev
-      - cmake
-
-env:
-    - CC=gcc-5 CXX=g++-5
-
-before_script:
-  - mkdir build
-  - cd build
-  - cmake ..
-
-script:
-  - make -j4
-  - make test
-
-notifications:
-  email:
-    on_success: never
-    on_failure: never