.woocommerce-MyAccount-navigation-link--epevent ul.ep-myaccount-tabs li:first-child {
    display: none;
}
.woocommerce-MyAccount-content div#ep-list-all-bookings, .woocommerce-MyAccount-content #ep-list-my-events, 
.woocommerce-MyAccount-content #ep-list-my-list{
    display: block;
}