Remove dynamic data from error

Summary:
Dynamic information means we can't deduplicate on the backend.
Logging the serial as a warning instead.

In general, I'm not convinced this is a good error to begin with
as it seems expected that devices can disappear on disconnect
but getting a better count should help to make that decision.

Reviewed By: aigoncharov

Differential Revision: D34247723

fbshipit-source-id: ace3c32d2370433dcca2debbea3a2c5d7a2ecb57

desktop/flipper-server-core/src/FlipperServerImpl.tsx

@@ -473,7 +473,8 @@ export class FlipperServerImpl implements FlipperServer {
   getDevice(serial: string): ServerDevice {
     const device = this.devices.get(serial);
     if (!device) {
-      throw new Error('No device with serial: ' + serial);
+      console.warn(`No device with serial ${serial}.`);
+      throw new Error('No device with matching serial.');
     }
     return device;
   }