travis: remove TravisCI, if someone wants to fix it, be my guest

Having a red status check only means that it is ok to see red there.
This shouldn't be the norm as it makes us ignore status checks.
It is the same case with random test failures.

License: MIT
Signed-off-by: Jakub Sztandera <kubuxu@protonmail.ch>

.travis.yml

-# dist: trusty # KVM Setup
-
-notifications:
-  email: false
-
-os:
-  - linux
-  - osx
-
-language: go
-
-go:
-    - 1.11.x
-
-env:
-  - TEST_NO_FUSE=1 TEST_VERBOSE=1 TEST_SUITE=test_go_expensive
-  - TEST_NO_FUSE=1 TEST_VERBOSE=1 TEST_SUITE=test_sharness_expensive
-
-install:
-  - make install
-
-script:
-  - make $TEST_SUITE
-
-# For docker containers
-
-sudo: required
-
-services:
-  - docker