Revert "chore: tmp enable fetch root key"

This reverts commit fe39797.

Author: nikolay-komarevskiy

ic-agent/Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-name = "ic-agent-with-discovery"
+name = "ic-agent"
 version.workspace = true
 authors.workspace = true
 edition.workspace = true

ic-agent/src/agent/http_transport/dynamic_routing/nodes_fetch.rs

@@ -65,9 +65,6 @@ impl Fetch for NodesFetcher {
                     "Failed to build the agent: {err}"
                 ))
             })?;
-        agent.fetch_root_key().await.map_err(|err| {
-            DynamicRouteProviderError::NodesFetchError(format!("Failed to fetch root key: {err}"))
-        })?;
         let api_bns = agent
             .fetch_api_boundary_nodes_by_subnet_id(self.subnet_id)
             .await