tweak: remove error_from_source (#1481)

src/eth/rpc/rpc_server.rs

@@ -606,7 +606,7 @@ fn eth_estimate_gas(params: Params<'_>, ctx: Arc<RpcContext>, ext: Extensions) -
         // internal error
         Err(e) => {
             tracing::error!(reason = ?e, "failed to execute eth_estimateGas because of unexpected error");
-            Err(error_with_source(e, "failed to execute eth_estimateGas"))
+            Err(RpcError::Unexpected(e.context("failed to execute eth_estimateGas")))
         }
     }
 }
@@ -647,7 +647,7 @@ fn eth_call(params: Params<'_>, ctx: Arc<RpcContext>, ext: Extensions) -> Result
         // internal error
         Err(e) => {
             tracing::error!(reason = ?e, "failed to execute eth_call because of unexpected error");
-            Err(error_with_source(e, "failed to execute eth_call"))
+            Err(RpcError::Unexpected(e.context("failed to execute eth_call")))
         }
     }
 }
@@ -712,7 +712,7 @@ fn eth_send_raw_transaction(params: Params<'_>, ctx: Arc<RpcContext>, ext: Exten
         }
         Err(e) => {
             tracing::error!(reason = ?e, "failed to execute eth_sendRawTransaction because of unexpected error");
-            Err(error_with_source(e, "failed to execute eth_sendRawTransaction"))
+            Err(RpcError::Unexpected(e.context("failed to execute eth_sendRawTransaction")))
         }
     }
 }
@@ -968,13 +968,6 @@ fn hex_num_zero_padded(value: impl Into<U256>) -> String {
     format!("{:#0width$x}", value.into(), width = width)
 }
 
-/// TODO: remove
-#[inline(always)]
-fn error_with_source(e: anyhow::Error, context: &str) -> RpcError {
-    let error_source = format!("{:?}", e.source());
-    e.context(format!("{} {}", context, error_source)).into()
-}
-
 fn hex_zero() -> String {
     "0x0".to_owned()
 }