Remove GatesBoy (#223)

Closes #223

README.md

@@ -534,7 +534,6 @@ Methods to improve and/or manipulate the camera's quality and behavior:
 - [papiGB](https://github.com/diegovalverde/papiGB) - Game Boy Classic fully functional FPGA implementation from scratch.
 - [fpgaboy](https://github.com/trun/fpgaboy) - Implementation Nintendo's Game Boy console on an FPGA.
 - [Piglet](https://github.com/danShumway/Piglet) - A LUA-driven AI that plays classic Game Boy color games using experimentation. In active development.
-- [Gatesboy](https://web.archive.org/web/*/http://www.gatesboy.com/) - Non-gaming purposes applications development.
 - [Ostrich](https://github.com/PumpMagic/ostrich) - A Game Boy Sound System player written in Swift.
 - [mGB](https://github.com/trash80/mGB) - A Game Boy cartridge program that enables the Game Boy to act as a full MIDI supported sound module.
 - [GBVisualizer](https://github.com/LIJI32/GBVisualizer) - Demonstrating the use of two undocumented Game Boy Color registers, nicknamed PCM12 (FF76) and PCM34 (FF77), which can be used to read the current PCM amplitude of the 4 APU channels.