CA-409628: remove duplicate exception backtrace

response_internal_error already calls Backtrace.is_important in the correct place,
and logs the exception.
There is no need to do that a 2nd time in the caller.

Signed-off-by: Edwin Török <[email protected]>

Author: edwintorok

ocaml/libs/http-lib/http_svr.ml

@@ -498,10 +498,8 @@ let read_request ?proxy_seen ~read_timeout ~total_timeout ~max_length fd =
                    (Unix.error_message a) b c
                 )
         | exc ->
-            Backtrace.is_important exc ;
             response_internal_error exc fd
-              ~extra:(escape (Printexc.to_string exc)) ;
-            log_backtrace exc
+              ~extra:(escape (Printexc.to_string exc))
     ) ;
     (None, None)