Simplify Collective Access - Providence licenses (remove *-only)

README.md

@@ -157,7 +157,7 @@ _Related: [Content Management Systems (CMS)](#content-management-systems-cms)_
 - [Archivematica](https://www.archivematica.org/en/) - Mature digital preservation system designed to maintain standards-based, long-term access to collections of digital objects. ([Demo](https://sandbox.archivematica.org/administration/accounts/login/), [Source Code](https://github.com/artefactual/archivematica)) `AGPL-3.0` `Python`
 - [ArchivesSpace](https://archivesspace.org/) - Archives information management application for managing and providing Web access to archives, manuscripts and digital objects. ([Demo](https://archivesspace.org/application/demo), [Source Code](https://github.com/archivesspace/archivesspace)) `ECL-2.0` `Ruby`
 - [CKAN](https://ckan.org) - CKAN is a tool for making open data websites. ([Source Code](https://github.com/ckan/ckan)) `AGPL-3.0` `Python`
-- [Collective Access - Providence](https://collectiveaccess.org/) - Highly configurable Web-based framework for management, description, and discovery of digital and physical collections supporting a variety of metadata standards, data types, and media formats. ([Source Code](https://github.com/collectiveaccess/providence)) `GPL-3.0-only` `PHP`
+- [Collective Access - Providence](https://collectiveaccess.org/) - Highly configurable Web-based framework for management, description, and discovery of digital and physical collections supporting a variety of metadata standards, data types, and media formats. ([Source Code](https://github.com/collectiveaccess/providence)) `GPL-3.0` `PHP`
 - [Ganymede](https://github.com/Zibbp/ganymede) `⚠` - Twitch VOD and Live Stream archiving platform. Includes a rendered chat for each archive. `GPL-3.0` `Docker`
 - [LiveStreamDVR](https://github.com/MrBrax/LiveStreamDVR) `⚠` - An automatic Twitch recorder capable of capturing live streams, chat messages and stream metadata. `MIT` `Python/Nodejs`
 - [Omeka S](https://omeka.org/s/) - Omeka S is a web publication system for universities, galleries, libraries, archives, and museums. It consists of a local network of independently curated exhibits sharing a collaboratively built pool of items, media, and their metadata. ([Source Code](https://github.com/omeka/omeka-s)) `GPL-3.0` `Nodejs`