Do not disconnect when there's a 'send' error

Summary:
Historically, RSocket used to raise an error when there was an error during send, most likely because the connection was dead.

With WS, this is no longer the case.

WS connection issues are raised through the according handlers.

Reviewed By: passy

Differential Revision: D37825821

fbshipit-source-id: 7fcda8cf26fb42eb0d8ca03b62482f11c931777f

desktop/flipper-frontend-core/src/AbstractClient.tsx

@@ -379,9 +379,6 @@ export default abstract class AbstractClient extends EventEmitter {
             });
           }
         } catch (error) {
-          // This is only called if the connection is dead. Not in expected
-          // and recoverable cases like a missing receiver/method.
-          this.disconnect();
           reject(new Error('Unable to send, connection error: ' + error));
         }
       } else {