[MINOR] Add omissive param desc on method doc and cleanup redundant code (#1437)

hudi-client/src/main/java/org/apache/hudi/client/AbstractHoodieWriteClient.java

@@ -417,17 +417,4 @@ public abstract class AbstractHoodieWriteClient<T extends HoodieRecordPayload> e
     }
   }
 
-  /**
-   * Refers to different operation types.
-   */
-  enum OperationType {
-    INSERT,
-    INSERT_PREPPED,
-    UPSERT,
-    UPSERT_PREPPED,
-    DELETE,
-    BULK_INSERT,
-    BULK_INSERT_PREPPED,
-    BOOTSTRAP
-  }
 }

hudi-utilities/src/main/java/org/apache/hudi/utilities/deltastreamer/DeltaSync.java

@@ -342,9 +342,10 @@ public class DeltaSync implements Serializable {
   /**
    * Perform Hoodie Write. Run Cleaner, schedule compaction and syncs to hive if needed.
    *
-   * @param records       Input Records
-   * @param checkpointStr Checkpoint String
-   * @param metrics       Metrics
+   * @param records             Input Records
+   * @param checkpointStr       Checkpoint String
+   * @param metrics             Metrics
+   * @param overallTimerContext Timer Context
    * @return Option Compaction instant if one is scheduled
    */
   private Option<String> writeToSink(JavaRDD<HoodieRecord> records, String checkpointStr,