Remove MySocialApp for lack of free tier/abandonement

It seems like there is no free tier, according to their [pricing page](https://mysocialapp.io/pricing). 
Also, the project seems abandoned for the following reasons:
 - There haven't been any commits on their GitHub repos in a very long time (1+ years for most of them). [Link](https://github.com/orgs/MySocialApp/repositories)
 - The `Early Access` buttons show an expired Typeform. There is no other way to get access to the app.
 - Their documentation page links to the same expired Typeform in the first step of getting started. [Link](https://docs.mysocialapp.io/docs/setup)

README.md

@@ -1260,7 +1260,6 @@ API | Description | Auth | HTTPS | CORS |
 | [LinkedIn](https://docs.microsoft.com/en-us/linkedin/?context=linkedin/context) | The foundation of all digital integrations with LinkedIn | `OAuth` | Yes | Unknown |
 | [Meetup.com](https://www.meetup.com/meetup_api/) | Data about Meetups from Meetup.com | `apiKey` | Yes | Unknown |
 | [Microsoft Graph](https://docs.microsoft.com/en-us/graph/api/overview) | Access the data and intelligence in Microsoft 365, Windows 10, and Enterprise Mobility | `OAuth` | Yes | Unknown |
-| [MySocialApp](https://mysocialapp.io) | Seamless Social Networking features, API, SDK to any app | `apiKey` | Yes | Unknown |
 | [NAVER](https://developers.naver.com/main/) | NAVER Login, Share on NAVER, Social Plugins and more | `OAuth` | Yes | Unknown |
 | [Open Collective](https://docs.opencollective.com/help/developers/api) | Get Open Collective data | No | Yes | Unknown |
 | [Pinterest](https://developers.pinterest.com/) | The world's catalog of ideas | `OAuth` | Yes | Unknown |