[vpj] Remove dead validateRemoteReplayPolicy field to fix SpotBugs

The SOP-only restriction was removed as part of epoch passthrough, but
the validateRemoteReplayPolicy field and its usage were left behind.
SpotBugs flagged the field as never written. Remove the dead field and
make validateRemoteHybridSettings a no-op.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: pthirun

clients/venice-push-job/src/main/java/com/linkedin/venice/hadoop/PushJobSetting.java

@@ -5,7 +5,6 @@
 import com.linkedin.venice.controllerapi.StoreResponse;
 import com.linkedin.venice.etl.ETLValueSchemaTransformation;
 import com.linkedin.venice.jobs.DataWriterComputeJob;
-import com.linkedin.venice.meta.BufferReplayPolicy;
 import com.linkedin.venice.meta.HybridStoreConfig;
 import com.linkedin.venice.meta.Version;
 import com.linkedin.venice.schema.vson.VsonSchema;
@@ -57,7 +56,7 @@ public class PushJobSetting implements Serializable {
   public boolean pushToSeparateRealtimeTopicEnabled;
   public boolean kafkaInputCombinerEnabled;
   public boolean kafkaInputBuildNewDictEnabled;
-  public BufferReplayPolicy validateRemoteReplayPolicy;
+
   public boolean suppressEndOfPushMessage;
   public boolean deferVersionSwap;
   public boolean extendedSchemaValidityCheckEnabled;

clients/venice-push-job/src/main/java/com/linkedin/venice/hadoop/VenicePushJob.java

@@ -1987,18 +1987,8 @@ protected void validateRemoteHybridSettings() {
   }
 
   protected void validateRemoteHybridSettings(PushJobSetting setting) {
-    if (setting.validateRemoteReplayPolicy != null) {
-      StoreResponse response = getStoreResponse(setting.storeName);
-      HybridStoreConfig hybridStoreConfig = response.getStore().getHybridStoreConfig();
-      if (!setting.validateRemoteReplayPolicy.equals(hybridStoreConfig.getBufferReplayPolicy())) {
-        throw new VeniceException(
-            String.format(
-                "Remote rewind policy is %s but push settings require a policy of %s. "
-                    + "Please adjust hybrid settings or push job configuration!",
-                hybridStoreConfig.getBufferReplayPolicy(),
-                setting.validateRemoteReplayPolicy));
-      }
-    }
+    // No-op: With epoch passthrough, the absolute epoch timestamp flows directly through the
+    // pipeline, making the SOP/EOP replay policy validation unnecessary.
   }
 
   private Map<Integer, String> validateAndFetchNewKafkaMessageEnvelopeSchemas(PushJobSetting setting) {