Kill onRegisterDevice

Summary: `onRegisterDevice` device abstraction was only used by the CrashReporterPlugin, and since with Sandy plugin lifecycles every plugin can do 'on-load' logic, we don't need it anymore.

Reviewed By: priteshrnandgaonkar

Differential Revision: D27046711

fbshipit-source-id: 16c567c60ed29a50017d525a2b707ee696a99e62

desktop/app/src/plugin.tsx

@@ -128,16 +128,6 @@ export abstract class FlipperBasePlugin<
   static getActiveNotifications:
     | ((persistedState: StaticPersistedState) => Array<Notification>)
     | undefined;
-  static onRegisterDevice:
-    | ((
-        store: Store,
-        baseDevice: BaseDevice,
-        setPersistedState: (
-          pluginKey: string,
-          newPluginState: StaticPersistedState | null,
-        ) => void,
-      ) => void)
-    | null;
 
   reducers: {
     [actionName: string]: (state: State, actionData: any) => Partial<State>;