Get rid of TravisCI

.travis.yml

@@ -1,25 +0,0 @@
-language: c++
-dist: focal
-osx_image: xcode12
-
-os:
-  - linux
-  - osx
-
-env:
-  - QT_SELECT=qt5
-
-before_install:
-  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sudo apt-get -qq update; fi
-#  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew update; fi
-
-install:
-#  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install qt protobuf; fi
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install qt; fi
-  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sudo apt-get install qtbase5-dev qtbase5-dev-tools qt5-qmake libprotobuf-dev protobuf-compiler; fi
-
-script:
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then PATH=/usr/local/opt/qt/bin/:${PATH}; fi
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then qmake PROTOBUF=/usr/local pbfplugin.pro; fi
-  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then qmake pbfplugin.pro; fi
-  - make