DBZ-695 Removing some unused code

debezium-connector-db2/src/main/java/io/debezium/connector/db2/Db2Connection.java

@@ -54,9 +54,6 @@ public class Db2Connection extends JdbcConnection {
 
     private static final String LSN_TO_TIMESTAMP = "SELECT CURRENT TIMEstamp FROM sysibm.sysdummy1  WHERE ? > X'00000000000000000000000000000000'";
 
-    private static final String INCREMENT_LSN = " SELECT *" +
-            " FROM (select CAST(CAST( ? AS VARCHAR(16) FOR BIT DATA) AS VARCHAR(32)) AS LSN from sysibm.sysdummy1)   FETCH FIRST ROW ONLY;";
-
     private static final String GET_ALL_CHANGES_FOR_TABLE = "SELECT "
             + "CASE "
             + "WHEN IBMSNAP_OPERATION = 'D' AND (LEAD(cdc.IBMSNAP_OPERATION,1,'X') OVER (PARTITION BY cdc.IBMSNAP_COMMITSEQ ORDER BY cdc.IBMSNAP_INTENTSEQ)) ='I' THEN 3 "

debezium-connector-db2/src/main/java/io/debezium/connector/db2/Db2SchemaChangeEventEmitter.java

@@ -5,9 +5,6 @@
  */
 package io.debezium.connector.db2;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
 import io.debezium.pipeline.spi.SchemaChangeEventEmitter;
 import io.debezium.relational.Table;
 import io.debezium.schema.SchemaChangeEvent;
@@ -20,8 +17,6 @@
  */
 public class Db2SchemaChangeEventEmitter implements SchemaChangeEventEmitter {
 
-    private static final Logger LOGGER = LoggerFactory.getLogger(Db2SchemaChangeEventEmitter.class);
-
     private final Db2OffsetContext offsetContext;
     private final ChangeTable changeTable;
     private final Table tableSchema;

debezium-connector-db2/src/main/java/io/debezium/connector/db2/Db2SnapshotChangeEventSource.java

@@ -165,16 +165,7 @@ protected void readTableStructure(ChangeEventSourceContext sourceContext, Snapsh
             }
 
             LOGGER.info("Reading structure of schema '{}'", schema);
-            /**
-            jdbcConnection.readSchema(
-                    snapshotContext.tables,
-                    snapshotContext.catalogName,
-                    schema,
-                    connectorConfig.getTableFilters().dataCollectionFilter(),
-                    null,
-                    false
-            );
-             **/
+
             jdbcConnection.readSchema(
                     snapshotContext.tables,
                     null,