remove unnecessary semicolon (#9207)

Boyang Chen <boyang@confluent.io>, Bill Bejeck <bbejeck@apache.com>

streams/src/main/java/org/apache/kafka/streams/processor/internals/StreamThread.java

@@ -1087,7 +1087,7 @@ public class StreamThread extends Thread {
 
     Consumer<byte[], byte[]> restoreConsumer() {
         return restoreConsumer;
-    };
+    }
 
     Admin adminClient() {
         return adminClient;
@@ -1095,5 +1095,5 @@ public class StreamThread extends Thread {
 
     InternalTopologyBuilder internalTopologyBuilder() {
         return builder;
-    };
+    }
 }