remove .travis.yml

.travis.yml

@@ -1,30 +0,0 @@
-language: c
-
-cache: ccache
-
-compiler:
-  - gcc
-  - clang
-
-sudo: required
-dist: bionic
-
-matrix:
-  include:
-    - compiler: gcc
-      env: ANALYZE=true
-
-addons:
-    apt:
-        packages:
-        - cppcheck
-        - libsdl2-dev
-        - libsdl2-mixer-dev
-        - libsdl2-net-dev
-        - libsdl2-image-dev
-
-script: ./.travis.sh
-
-branches:
-    only:
-    - master