Remove Spectrum from community support page (#3949)

Author: minimalsm

content/community/support.md

@@ -28,7 +28,6 @@ Each community consists of many thousands of React users.
 * [Hashnode's React community](https://hashnode.com/n/reactjs)
 * [Reactiflux online chat](https://discord.gg/reactiflux)
 * [Reddit's React community](https://www.reddit.com/r/reactjs/)
-* [Spectrum's React community](https://spectrum.chat/react)
 
 ## News {#news}