travis: remove the .travis.yml file

In build.git we haven't been using Travis for almost 3 years and even if
we would enable it again, it would probably not work since it's
configured to run a very old Ubuntu release. We also stopped using this
as a full regression build testing since a) our build time had increased
and b) Travis had become more popular that prolonged the build time c)
we often hit the run-time limit for free accounts.

Because of this and to avoid confusion we should remove the Travis
configuration.

Signed-off-by: Joakim Bech <joakim.bech@linaro.org>
Acked-by: Jerome Forissier <jerome@forissier.org>
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index b3bc270..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,69 +0,0 @@
-# Travis configuration file for downloading and building OP-TEE according to the
-# instructions in build.git
-language: bash
-
-notifications:
-  email:
-    recipients:
-      - op-tee@linaro.org
-    on_success: change
-    on_failure: always
-
-dist: trusty
-sudo: required
-group: beta
-
-cache:
-  directories:
-    - $HOME/.ccache
-
-git:
-  depth: 10
-
-after_script:
-  - ccache -s
-
-before_install:
-  - ccache -s
-  - sudo dpkg --add-architecture i386
-  - sudo apt-get update -qq
-  # Package list taken from README.md
-  - sudo apt-get install -qq -y android-tools-adb android-tools-fastboot autoconf automake bc bison build-essential cscope curl device-tree-compiler flex ftp-upload gdisk iasl libattr1-dev libc6:i386 libcap-dev libfdt-dev libftdi-dev libglib2.0-dev libhidapi-dev libncurses5-dev libpixman-1-dev libssl-dev libstdc++6:i386 libtool libz1:i386 make mtools netcat python-crypto python-serial python-wand unzip uuid-dev xdg-utils xterm xz-utils zlib1g-dev
-
-install: true
-
-env:
-  - $REPO_PROJ=default
-  - $REPO_PROJ=fvp
-  - $REPO_PROJ=hikey
-  - $REPO_PROJ=hikey960
-  - $REPO_PROJ=juno
-  - $REPO_PROJ=qemu_v8
-  - $REPO_PROJ=rpi3
-
-before_script:
-  - mkdir -p $HOME/bin
-  - cd $HOME/bin && wget https://storage.googleapis.com/git-repo-downloads/repo && chmod +x repo
-  - export PATH=$HOME/bin:$PATH
-  - mkdir -p $HOME/$REPO_PROJ
-
-script:
-  # Special case for FVP, since we check for the Foundation_Platformpkg folder
-  # in the makefile.
-  - if [ $REPO_PROJ == "fvp" ]; then mkdir -p $HOME/$REPO_PROJ/Foundation_Platformpkg; fi
-  - cd $HOME/$REPO_PROJ && repo init -u https://github.com/OP-TEE/manifest.git -m $REPO_PROJ.xml </dev/null && repo sync -j2 --no-clone-bundle --no-tags --quiet
-  # Fetch a local copy of dtc+libfdt to avoid issues with a possibly outdated libfdt-dev
-  - if [ $REPO_PROJ == "qemu_v8" ]; then cd $HOME/$REPO_PROJ/qemu && git submodule update --init dtc; fi
-  # Here we are using Travis environment variables to select the correct branch
-  # based on either a pull request or a normal push.
-  - |
-        if [ "$TRAVIS_EVENT_TYPE" == "pull_request" ]; then
-                slug=$TRAVIS_PULL_REQUEST_SLUG
-                branch=$TRAVIS_PULL_REQUEST_BRANCH
-        else
-                slug=$TRAVIS_REPO_SLUG
-                branch=$TRAVIS_BRANCH
-        fi
-  - cd $HOME/$REPO_PROJ/build && git remote add github_remote https://github.com/$slug && git remote update
-  - cd $HOME/$REPO_PROJ/build && git checkout github_remote/$branch
-  - cd $HOME/$REPO_PROJ/build && make -f toolchain.mk toolchains -j3 && make all -j`nproc`