Remove Google Plus account. Service has been discontinued (#14503)

README.md

@@ -81,7 +81,7 @@ Join thousands of members worldwide 24/7 in our [community server](https://open.
 
 [![Rocket.Chat](https://open.rocket.chat/api/v1/shield.svg?type=channel&name=Rocket.Chat&channel=dev)](https://open.rocket.chat/channel/dev) for developers needing help from the community to developing new features.
 
-You can also join the conversation at [Twitter](https://twitter.com/RocketChat), [Facebook](https://www.facebook.com/RocketChatApp) or [Google Plus](https://plus.google.com/+RocketChatApp).
+You can also join the conversation at [Twitter](https://twitter.com/RocketChat) and [Facebook](https://www.facebook.com/RocketChatApp).
 
 # Desktop Apps
 Download the Native Cross-Platform Desktop Application at [Rocket.Chat.Electron](https://github.com/RocketChat/Rocket.Chat.Electron/releases)