Remove reqwest re-exports from eth2 (#8829)

Remove `reqwest` from being re-exported within `eth2`


Co-Authored-By: Mac L <mjladson@pm.me>

testing/validator_test_rig/src/mock_beacon_node.rs

@@ -1,7 +1,8 @@
 use eth2::types::{GenericResponse, SyncingData};
-use eth2::{BeaconNodeHttpClient, StatusCode, Timeouts};
+use eth2::{BeaconNodeHttpClient, Timeouts};
 use mockito::{Matcher, Mock, Server, ServerGuard};
 use regex::Regex;
+use reqwest::StatusCode;
 use sensitive_url::SensitiveUrl;
 use std::marker::PhantomData;
 use std::str::FromStr;