Disable vectorcontrol ESC firmware as they still are not really available on the market

.travis.yml

@@ -61,7 +61,7 @@ env:
 script:
   - ccache -M 1GB; ccache -z
   - if [ "${TRAVIS_OS_NAME}" = "linux" ]; then
-      docker run --rm -v `pwd`:`pwd`:rw -v $HOME/.ccache:$HOME/.ccache:rw -e CCACHE_DIR=$HOME/.ccache -e CI=true -e GIT_SUBMODULES_ARE_EVIL=1 -w=`pwd` --user=$UID -it ${DOCKER_REPO} /bin/bash -c "make check_qgc_firmware VECTORCONTROL=1";
+      docker run --rm -v `pwd`:`pwd`:rw -v $HOME/.ccache:$HOME/.ccache:rw -e CCACHE_DIR=$HOME/.ccache -e CI=true -e GIT_SUBMODULES_ARE_EVIL=1 -w=`pwd` --user=$UID -it ${DOCKER_REPO} /bin/bash -c "make check_qgc_firmware VECTORCONTROL=0";
     elif [ "${TRAVIS_OS_NAME}" = "osx" ]; then
       make tests;
     fi