Make git ignore directories that are left after 4.x#425

dkropachev merged 1 commit intoscylla-3.xscylladb/java-driver:scylla-3.xfrom

dk/3.x-add-leftover-directories-to-gitignorescylladb/java-driver:dk/3.x-add-leftover-directories-to-gitignoreCopy head branch name to clipboard