Double shutdown doesn't help! (#2828)

Fixes the fact that the HTTPS server wouldn't shut down while OTLP export was enabled.

server/core/src/https/mod.rs

@@ -389,8 +389,6 @@ pub async fn create_https_server(
 
         };
 
-        opentelemetry::global::shutdown_tracer_provider();
-
         info!("Stopped {}", super::TaskName::HttpsServer);
     }))
 }