chore: remove travis

Co-authored-by: Lorenzo Fontana <lo@linux.com>
Signed-off-by: Leonardo Di Donato <leodidonato@gmail.com>

.travis.yml

@@ -1,37 +0,0 @@
-#
-# Copyright (C) 2019 The Falco Authors.
-#
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-language: cpp
-compiler: gcc
-env:
-    - BUILD_TYPE=debug
-    - BUILD_TYPE=release
-dist: bionic
-services:
-    - docker
-before_install:
-    - sudo apt update -y
-install:
-    - sudo apt install libssl-dev libyaml-dev libncurses-dev libc-ares-dev libprotobuf-dev protobuf-compiler libjq-dev libyaml-cpp-dev libgrpc++-dev protobuf-compiler-grpc -y
-    - export BRANCH=$(if [ "$TRAVIS_PULL_REQUEST" == "false" ]; then echo $TRAVIS_BRANCH; else echo $TRAVIS_PULL_REQUEST_BRANCH; fi)
-    - sudo apt-get install rpm linux-headers-$(uname -r) libelf-dev
-    - git clone https://github.com/draios/sysdig.git ../sysdig
-    - pushd ../sysdig && (git checkout "${BRANCH}" || exit 0) && echo "Using branch:" $(git rev-parse --abbrev-ref HEAD) && popd
-script:
-    - mkdir build
-    - pushd build && cmake .. && make -j4 all && make tests && popd
-    # todo(fntlnz): execute tests and regression tests at this point
-    #- ./scripts/build "${TRAVIS_BUILD_DIR}/.." "${TRAVIS_BUILD_DIR}/build"