Use sbcl/1.4.14 on Windows

.travis.yml

@@ -21,43 +21,9 @@ jobs:
     - os: windows
       language: shell
       env:
-        - LISP=sbcl-bin/2.0.0
+        - LISP=sbcl-bin/1.4.14
         - DEST=cg.exe
 
-before_install:
-- |-
-    case $TRAVIS_OS_NAME in
-      windows)
-        [[ ! -f C:/tools/msys64/msys2_shell.cmd ]] && rm -rf C:/tools/msys64
-        choco uninstall -y mingw
-        choco upgrade --no-progress -y msys2
-        export msys2='cmd //C RefreshEnv.cmd '
-        export msys2+='& set MSYS=winsymlinks:nativestrict '
-        export msys2+='& C:\\tools\\msys64\\msys2_shell.cmd -defterm -no-start'
-        export mingw64="$msys2 -mingw64 -full-path -here -c "\"\$@"\" --"
-        export msys2+=" -msys2 -c "\"\$@"\" --"
-        $msys2 pacman --sync --noconfirm --needed mingw-w64-x86_64-toolchain
-        ## Install more MSYS2 packages from https://packages.msys2.org/base here
-        taskkill //IM gpg-agent.exe //F  # https://travis-ci.community/t/4967
-        export PATH=/C/tools/msys64/mingw64/bin:$PATH
-        export MAKE=mingw32-make  # so that Autotools can find it
-        ;;
-    esac
-
-before_cache:
-- |-
-    case $TRAVIS_OS_NAME in
-      windows)
-        # https://unix.stackexchange.com/a/137322/107554
-        $msys2 pacman --sync --clean --noconfirm
-        ;;
-    esac
-
-cache:
-    directories:
-    - $HOME/AppData/Local/Temp/chocolatey
-    - /C/tools/msys64
-
 install:
   - curl -L $ROSWELL_URL | sh
   - |