remove travis

.travis.yml

@@ -1,42 +0,0 @@
-sudo: required
-dist: bionic
-language: c
-cache:
-  apt: true
-  directories:
-    - /home/travis/postgresql
-env:
-  global:
-    - enable_coverage=yes
-    - PG_PRELOAD=cstore_fdw
-  matrix:
-    - PGVERSION=9.3
-    - PGVERSION=9.4
-    - PGVERSION=9.5
-    - PGVERSION=9.6
-    - PGVERSION=10
-    - PGVERSION=11
-    - PGVERSION=12
-
-before_install:
-  - git clone -b v0.7.13 --depth 1 https://github.com/citusdata/tools.git
-  - sudo make -C tools install
-  - setup_apt
-  - nuke_pg
-install:
-  - sudo apt-get install protobuf-c-compiler
-  - sudo apt-get install libprotobuf-c0-dev
-  - sudo locale-gen da_DK
-  - sudo locale-gen da_DK.utf8
-  - sudo pip install cpp-coveralls
-  - install_pg
-  - install_custom_pg
-before_script:
-  - chmod 777 .
-  - chmod 777 data
-  - chmod 666 data/*
-  - config_and_start_cluster
-script: pg_travis_test
-after_success:
-  - sudo chmod 666 *.gcda
-  - coveralls --exclude cstore.pb-c.c --exclude cstore.pb-c.h