ZB: Remove exchange implementation (#1450)

docs/ADD_NEW_EXCHANGE.md

@@ -221,7 +221,6 @@ Yes means supported, No means not yet implemented and NA means protocol unsuppor
 | Okx | Yes | Yes | NA |
 | Poloniex | Yes | Yes | NA |
 | Yobit | Yes | NA | NA |
-| ZB.COM | Yes | Yes | NA |
 ```
 
 #### Add exchange to the list of [supported exchanges](../exchanges/support.go):
@@ -252,7 +251,6 @@ var Exchanges = []string{
 	"okx",
 	"poloniex",
 	"yobit",
-    "zb",
 ```
 
 #### Increment the default number of supported exchanges in [config/config_test.go](../config/config_test.go):

docs/MULTICHAIN_TRANSFER_SUPPORT.md

@@ -68,4 +68,3 @@ $ ./gctcli withdrawcryptofunds --exchange=binance --currency=USDT --address=TJU9
 | Okx | Yes | Yes | |
 | Poloniex | Yes | Yes | |
 | Yobit | No | No | |
-| ZB.COM | Yes | No | Addresses must be created via their website first |

docs/OHLCV.md

@@ -89,5 +89,4 @@ A helper tool [cmd/dbseed](../cmd/dbseed/README.md) has been created for assisti
 | Okcoin         | Y           |  
 | Okx            | Y           |         
 | Poloniex       | Y           |          
-| Yobit          |            |    
-| ZB             | Y           |          
+| Yobit          |             |