Remove chainbase from API provider list (#1651)

Author: odednaor

components/Starknet/modules/ecosystem/pages/fullnodes-rpc-providers.adoc

@@ -49,10 +49,6 @@ For complete information on the Starknet JSON-RPC API, see https://github.com/st
 | http://blockpi.io/starknet[blockpi.io/starknet^]
 | N/A
 
-| Chainbase
-| http://chainbase.com/chainNetwork/Starknet[chainbase.com/chainNetwork/Starknet^]
-| N/A
-
 | Chainstack
 | https://chainstack.com/build-better-with-starknet/[chainstack.com/build-better-with-starknet^]
 | https://docs.chainstack.com/reference/getting-started-starknet#starknet-json-rpc-version-endpoints[docs.chainstack.com/reference/getting-started-starknet^]