change

    # enable programmable completion features (you don't need to enable
    # this, if it's already enabled in /etc/bash.bashrc).
    if [ -f /etc/bash_completion ]; then
      . /etc/bash_completion
    fi


to

    # enable programmable completion features (you don't need to enable
    # this, if it's already enabled in /etc/bash.bashrc).
    #if [ -f /etc/bash_completion ]; then
    #  . /etc/bash_completion
    #fi


in ~/.bashrc