fix repeated initialization of connectorsManager (#5545)

### Motivation

- The connectorsManager is initialized twice in WorkerService, it seems to be a misoperation when merging codes. 

### Modifications

- Delete the redundant codes.

(cherry picked from commit 7275d53a)

pulsar-functions/worker/src/main/java/org/apache/pulsar/functions/worker/WorkerService.java

@@ -201,9 +201,6 @@ public class WorkerService {
 
             // indicate function worker service is done initializing
             this.isInitialized = true;
-
-            this.connectorsManager = new ConnectorsManager(workerConfig);
-
         } catch (Throwable t) {
             log.error("Error Starting up in worker", t);
             throw new RuntimeException(t);