Remove OOPSpam, it's not free

README.md

@@ -573,7 +573,6 @@ API | Description | Auth | HTTPS | CORS |
 | [NetworkCalc](https://networkcalc.com/api/docs) | Network calculators, including subnets, DNS, binary, and security tools | No | Yes | Yes |
 | [npm Registry](https://github.com/npm/registry/blob/master/docs/REGISTRY-API.md) | Query information about your favorite Node.js libraries programatically | No | Yes | Unknown |
 | [OneSignal](https://documentation.onesignal.com/docs/onesignal-api) | Self-serve customer engagement solution for Push Notifications, Email, SMS & In-App | `apiKey` | Yes | Unknown |
-| [OOPSpam](https://oopspam.com/) | Multiple spam filtering service | No | Yes | Yes |
 | [Open Page Rank](https://www.domcop.com/openpagerank/) | API for calculating and comparing metrics of different websites using Page Rank algorithm | `apiKey` | Yes | Unknown |
 | [OpenAPIHub](https://hub.openapihub.com/) | The All-in-one API Platform | `X-Mashape-Key` | Yes | Unknown |
 | [OpenGraphr](https://opengraphr.com/docs/1.0/overview) | Really simple API to retrieve Open Graph data from an URL | `apiKey` | Yes | Unknown |