Remove link to v4 repo from README.md

Author: JustRegularLuna

README.md

@@ -69,7 +69,6 @@ After setting up the repository, you'll want to download the current release of
 
 ## See also
 
-* [**Pokémon Red++ v4**][redplusplus] by Me.
 * [**Pokémon Polished Crystal**][polished] by Rangi.
 * [**Pokémon RedStar/BlueStar**][redstarbluestar] by Rangi.
 * [**Pokémon Orange**][orange] by Pia Carrot.
@@ -78,7 +77,6 @@ After setting up the repository, you'll want to download the current release of
 
 [polished]: http://github.com/rangi42/polishedcrystal
 [polishedmap]: https://github.com/rangi42/polished-map
-[redplusplus]: https://github.com/TheFakeMateo/RedPlusPlus
 [redstarbluestar]: https://github.com/Rangi42/redstarbluestar
 [orange]: https://github.com/PiaCarrot/pokeorange
 [pokered]: https://github.com/pret/pokered