ignore error for starting metrics server

Signed-off-by: Siddharth <[email protected]>

Author: siddharth0815

sdk.go

@@ -250,9 +250,7 @@ func Serve(fn v1.FunctionRunnerServiceServer, o ...ServeOption) error {
 
 		// Start metrics server in a goroutine
 		go func() {
-			if err := metricsServer.ListenAndServe(); err != nil && err != http.ErrServerClosed {
-				_ = errors.Wrap(err, "cannot serve metrics HTTP connections")
-			}
+			_ = metricsServer.ListenAndServe()
 		}()
 	}