Remove unused git instructions

.travis.yml

@@ -8,12 +8,7 @@ script:
 - source ./support/compile.sh
 
 after_success:
-- git config --global user.email "builds@travis-ci.com"
-- git config --global user.name "Travis CI"
 - export GIT_TAG=build-$TRAVIS_BRANCH-$(date -u "+%Y-%m-%d")-$TRAVIS_BUILD_NUMBER
-- echo -n $GIT_TAG > version
-- git commit -m "Set build VERSION number" version
-- git tag $GIT_TAG -a -m "Generated tag from TravisCI build $TRAVIS_BUILD_NUMBER"
 branches:
   except:
   - "/^build-[0-9a-z\\-]*/"