Disable Alpine in Travis

Author: reuk

.travis.yml

@@ -39,20 +39,6 @@ jobs:
       # env: COMPILER=g++-5 SAN_FLAGS="-fsanitize=undefined -fno-sanitize-recover -fno-omit-frame-pointer"
       env: COMPILER="ccache g++-5"
 
-    # Alpine Linux with musl-libc using g++
-    - stage: Test different OS/CXX/Flags
-      os: linux
-      sudo: required
-      compiler: gcc
-      cache: ccache
-      services:
-        - docker
-      before_install:
-        - docker pull diffblue/cbmc-builder:alpine-0.0.3
-      env:
-        - PRE_COMMAND="docker run -v ${TRAVIS_BUILD_DIR}:/cbmc -v ${HOME}/.ccache:/root/.ccache diffblue/cbmc-builder:alpine-0.0.3"
-        - COMPILER="ccache g++"
-
     # OS X using g++
     - stage: Test different OS/CXX/Flags
       os: osx