Remove ICObench

ICObench provides access to its API only on the pro plan.

ref 1: https://icobench.com/pro
ref 2: https://icobench.com/developers

README.md

@@ -338,7 +338,6 @@ API | Description | Auth | HTTPS | CORS |
 | [Ethplorer](https://github.com/EverexIO/Ethplorer/wiki/Ethplorer-API) | Ethereum tokens, balances, addresses, history of transactions, contracts, and custom structures | `apiKey` | Yes | Unknown |
 | [FTX](https://docs.ftx.com/) | Complete REST, websocket, and FTX APIs to suit your algorithmic trading needs | `apiKey` | Yes | Yes |
 | [Gemini](https://docs.gemini.com/rest-api/) | Cryptocurrencies Exchange | No | Yes | Unknown |
-| [ICObench](https://icobench.com/developers) | Various information on listing, ratings, stats, and more | `apiKey` | Yes | Unknown |
 | [Indodax](https://github.com/btcid/indodax-official-api-docs) | Trade your Bitcoin and other assets with rupiah | `apiKey` | Yes | Unknown |
 | [INFURA Ethereum](https://infura.io/product/ethereum) | Interaction with the Ethereum mainnet and several testnets | `apiKey` | Yes | Yes |
 | [Kraken](https://docs.kraken.com/rest/) | Cryptocurrencies Exchange | `apiKey` | Yes | Unknown |