fix

Author: JingsongLi

paimon-hive/paimon-hive-catalog/src/main/java/org/apache/paimon/hive/migrate/HiveMigrator.java

@@ -135,10 +135,6 @@ public void deleteOriginTable(boolean deleteOriginTable) {
 
     @Override
     public void executeMigrate() throws Exception {
-        if (!client.tableExists(sourceDatabase, sourceTable)) {
-            throw new RuntimeException("Source hive table does not exist");
-        }
-
         Table sourceHiveTable = client.getTable(sourceDatabase, sourceTable);
         Map<String, String> properties = new HashMap<>(sourceHiveTable.getParameters());
         checkPrimaryKey();