Move Python 2.6 unit tests to Github Actions (#17279)

* Run Python2.6 unit tests on Github Actions
* Skip url tests on Python 2.6 to reduce waiting times
* Skip foreground background tests on Python 2.6 to reduce waiting times
* Removed references to Travis in the documentation
* Deleted install_patchelf.sh (can be installed from repo on CentOS 6)

1 files changed, 0 insertions, 60 deletions

diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 808e79bbff..0000000000
--- a/.travis.yml
+++ /dev/null
@@ -1,60 +0,0 @@
-# Only build releases and develop on push; do not build every branch.
-branches:
-  only:
-    - develop
-    - /^releases\/.*$/
-
-language: python
-python: '2.6'
-dist: trusty
-os: linux
-addons:
-  apt:
-    packages:
-      - gfortran
-      - graphviz
-      - gnupg2
-      - kcov
-      - mercurial
-      - ninja-build
-      - realpath
-      - zsh
-      - fish
-
-before_install:
-  - if [[ "$TRAVIS_DIST" == "trusty" ]]; then
-        share/spack/qa/install_patchelf.sh;
-    else
-        sudo apt-get update;
-        sudo apt-get -y install patchelf;
-    fi
-
-# Install various dependencies
-install:
-  - pip install --upgrade pip
-  - pip install --upgrade six
-  - pip install --upgrade setuptools
-  - pip install --upgrade flake8
-  - pip install --upgrade pep8-naming
-
-before_script:
-  # Need this for the git tests to succeed.
-  - git config --global user.email "spack@example.com"
-  - git config --global user.name "Test User"
-
-  # Need this to be able to compute the list of changed files
-  - git fetch origin ${TRAVIS_BRANCH}:${TRAVIS_BRANCH}
-
-script:
-  - python bin/spack -h
-  - python bin/spack help -a
-  - python bin/spack -p --lines 20 spec mpileaks%gcc ^elfutils@0.170
-  - python bin/spack test -x --verbose
-
-notifications:
-  email:
-    recipients:
-    - tgamblin@llnl.gov
-    - massimiliano.culpo@gmail.com
-    on_success: change
-    on_failure: always