removing travis configs since we haven't used travis in months

.travis.yml

@@ -1,90 +0,0 @@
-sudo: required
-
-matrix:
-  include:
-    ###################
-    - language: cpp
-      compiler: clang
-      os: linux
-      env:
-        - VARIANT=test
-        - DISABLED_TESTS=""
-      script:
-        - dlib/travis/build-and-test.sh
-
-    ###################
-    - language: cpp
-      compiler: gcc
-      os: linux
-      env:
-        - VARIANT=test-debug
-        - DISABLED_TESTS=""
-      script:
-        - dlib/travis/build-and-test.sh
-
-    ###################
-    - language: cpp
-      compiler: gcc
-      os: linux
-      env:
-        - VARIANT=old-cmake
-      before_install:
-        - dlib/travis/get-old-cmakes.sh
-      cache:
-        - directories: cmake
-      script:
-        - dlib/travis/build-and-test.sh
-
-    ########### test with C++17 ########
-    - language: cpp
-      compiler: gcc
-      os: linux
-      env:
-        - VARIANT=test
-        - CXXFLAGS=-std=c++17
-          # Need to set MATRIX_EVAL to set CC and CXX env vars.  You would
-          # think you could just set them in the env area like any other, but
-          # travis is wonky about CC and CXX vars so you have to do it this way.
-        - MATRIX_EVAL="CC=gcc-7 && CXX=g++-7"
-        - DISABLED_TESTS=""
-      addons:
-        apt:
-          sources:
-            - ubuntu-toolchain-r-test
-          packages:
-            - g++-7
-      script:
-        - dlib/travis/build-and-test.sh
-
-    ###################
-    # Disabled to avoid spending too many travis-ci credits each month.
-    #- language: python
-    #  python: 3.5
-    #  env:
-    #    - VARIANT=python-api
-    #  script:
-    #    - dlib/travis/build-and-test.sh
-
-    ###################
-    - language: python
-      python: 3.8
-      env:
-        - VARIANT=python-api
-      script:
-        - dlib/travis/build-and-test.sh
-
-    ###################
-    # Disabled to avoid spending too many travis-ci credits each month.  They
-    # also charge 5x as many credits for osx as linux.
-    #- language: cpp
-    #  os: osx
-    #  osx_image: xcode9.2
-    #  env:
-    #    - VARIANT=test
-    #    # Don't test the timer because it relies on the machine running it not
-    #    # being under high load, but that seems to be unlikely on the travis
-    #    # osx VMs.
-    #    - DISABLED_TESTS="--no_test_timer"
-    #  script:
-    #    - dlib/travis/build-and-test.sh
-

dlib/travis/build-and-test.sh

@@ -1,62 +0,0 @@
-#!/usr/bin/env bash
-# Exit if anything fails.
-set -eux
-
-# execute the contents of MATRIX_EVAL if it's set
-if [ -n "${MATRIX_EVAL+set}" ]; then
-    eval "${MATRIX_EVAL}"
-fi
-
-CXX_FLAGS="-std=c++11"
-if [ ! -z ${CXXFLAGS+set} ]; then
-    CXX_FLAGS="${CXXFLAGS}"
-fi
-
-# build dlib and tests
-if [ "$VARIANT" = "test" ]; then
-  mkdir build
-  cd build
-  cmake ../dlib/test -DCMAKE_CXX_FLAGS="${CXX_FLAGS}"
-  cmake --build . --target dtest -- -j 2
-  ./dtest --runall $DISABLED_TESTS
-fi
-
-# build dlib and tests
-if [ "$VARIANT" = "test-debug" ]; then
-  mkdir build
-  cd build
-  cmake ../dlib/test -DDLIB_ENABLE_ASSERTS=1 -DCMAKE_CXX_FLAGS="${CXX_FLAGS}"
-  cmake --build . --target dtest -- -j 2
-  ./dtest --runall $DISABLED_TESTS
-fi
-
-# The point of this test is just to make sure the cmake scripts work with the
-# oldest version of cmake we are supposed to support.
-if [ "$VARIANT" = "old-cmake" ]; then
-  mkdir build
-  cd build
-  CMAKEDIR=../cmake
-
-  $CMAKEDIR/2.8/bin/cmake ../dlib/test/tools
-  $CMAKEDIR/2.8/bin/cmake --build .  -- -j 2
-
-  rm -rf *
-  $CMAKEDIR/3.1/bin/cmake ../dlib/test/tools
-  $CMAKEDIR/3.1/bin/cmake --build .  -- -j 2
-
-  rm -rf *
-  $CMAKEDIR/3.5/bin/cmake ../dlib/test/tools
-  $CMAKEDIR/3.5/bin/cmake --build .  -- -j 2
-
-
-  # just to make sure there isn't anything funny about building standalone dlib
-  rm -rf *
-  $CMAKEDIR/2.8/bin/cmake ../dlib
-  $CMAKEDIR/2.8/bin/cmake --build .  -- -j 2
-fi
-
-if [ "$VARIANT" = "python-api" ]; then
-  python setup.py test --clean
-  pip uninstall numpy -y
-  python setup.py test --clean
-fi

dlib/travis/get-old-cmakes.sh

@@ -1,42 +0,0 @@
-#!/usr/bin/env bash
-
-
-
-
-# Make sure the binaries are there, if not then delete the directory and redownload
-./cmake/2.8/bin/cmake --version || rm -rf cmake
-./cmake/3.1/bin/cmake --version || rm -rf cmake
-./cmake/3.5/bin/cmake --version || rm -rf cmake
-
-
-# Exit if anything fails.
-set -eux
-
-if [[ ! -d cmake ]]; then
-  echo "Downloading cmake..."
-
-  # Travis requires 64bit binaries but they aren't available for this version of cmake, so we build from source
-  CMAKE_URL="https://cmake.org/files/v2.8/cmake-2.8.12.1.tar.gz"
-  mkdir -p cmake/2.8
-  wget --no-check-certificate -O - ${CMAKE_URL} | tar --strip-components=1 -xz -C cmake/2.8
-  pushd cmake/2.8
-  ./configure
-  make -j2
-  popd
-
-  CMAKE_URL="http://www.cmake.org/files/v3.1/cmake-3.1.2-Linux-x86_64.tar.gz"
-  mkdir -p cmake/3.1
-  wget --no-check-certificate -O - ${CMAKE_URL} | tar --strip-components=1 -xz -C cmake/3.1
-
-  CMAKE_URL="http://www.cmake.org/files/v3.5/cmake-3.5.2-Linux-x86_64.tar.gz"
-  mkdir -p cmake/3.5
-  wget --no-check-certificate -O - ${CMAKE_URL} | tar --strip-components=1 -xz -C cmake/3.5
-
-fi
-
-
-#make sure the binaries are really there
-./cmake/2.8/bin/cmake --version
-./cmake/3.1/bin/cmake --version 
-./cmake/3.5/bin/cmake --version 
-