Update install_dependencies.sh

travis/install_dependencies.sh

@@ -18,9 +18,6 @@ elif [[ "$TRAVIS_OS_NAME" == "osx" ]]; then
   sudo port select --set pip pip$PYTHON;
   pip install pyinstaller --user;
   export PATH=$PATH:$(python3 -c "import site; print(site.USER_BASE)")/bin;
-
-  xcode-select --install
-  /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
   brew install gperf cmake openssl coreutils
 elif [[ "$TRAVIS_OS_NAME" == "windows" ]]; then
   echo "==Windows=="