fix: remove ethers celo feature and ignore celo test (#313)

ethers-providers/Cargo.toml

@@ -49,6 +49,6 @@ tempfile = "3.2.0"
 
 [features]
 default = ["ws", "ipc"]
-celo = ["ethers-core/celo", "ethers/celo"]
+celo = ["ethers-core/celo"]
 ws = ["tokio", "tokio-tungstenite"]
 ipc = ["tokio", "tokio/io-util", "tokio-util", "bytes"]

ethers-providers/src/provider.rs

@@ -875,6 +875,7 @@ mod tests {
     }
 
     #[tokio::test]
+    #[cfg_attr(feature = "celo", ignore)]
     async fn test_is_signer() {
         use ethers_core::utils::Ganache;
         use std::str::FromStr;