remove ymarks-server (Repository unavailable - Bitbucket no longer supports Mercurial repositories.)

README.md

@@ -240,7 +240,6 @@ See also [Static Site Generators](#static-site-generators), [Content Management
 - [unmark](https://github.com/plainmade/unmark) - Open source to do app for links. `MIT` `PHP`
 - [ubookmark](https://ungleich.ch/u/projects/ubookmark/) - LDAP enabled bookmarking service. ([Demo](https://ipv6.blog), [Source Code](https://code.ungleich.ch/ungleich-public/ubookmark/)) `GPL-2.0` `Python`
 - [xBrowserSync](https://www.xbrowsersync.org) - Open source tool for syncing browser data between browsers and devices. ([Source Code](https://github.com/xBrowserSync)) `MIT` `Nodejs`
-- [ymarks](https://bitbucket.org/ymarks/ymarks-server) - Keep your browser's bookmarks synchronized without limiting yourself to one provider. `WTFPL` `C`
 
 ## Calendaring and Contacts Management