[clone] Remove support for Hudi tables

Author: JingsongLi

docs/content/migration/clone-to-paimon.md

@@ -32,14 +32,8 @@ Clone supports cloning tables to Paimon tables.
 2. Clone is reentrant, but it requires existing tables to contain all fields from the source table and have the
    same partition fields.
 
-Currently, clone supports:
-1. Clone Hive tables in Hive Catalog to Paimon Catalog, supports Parquet, ORC, Avro formats, target table will
-   be append table.
-2. Clone Hudi tables in Hive Catalog to Paimon Catalog, target table will be append table.
-
-The source table below is currently under development:
-1. Clone Paimon tables to Paimon tables, target table can be primary table or append table.
-2. Clone Iceberg tables in Hive Catalog to Paimon Catalog, target table will be append table.
+Currently, clone supports clone Hive tables in Hive Catalog to Paimon Catalog, supports Parquet, ORC, Avro formats,
+target table will be append table.
 
 ## Clone Hive Table
 
@@ -93,13 +87,6 @@ clone \
 The format is `<database1>.<table1>,<database2>.<table2>,<database3>.<table3>`.
 "--excluded_tables" has higher priority than "--included_tables" if you specified both.
 
-
-## Clone Hudi Tables
-
-Clone Hudi needs dependency: [hudi-flink1.18-bundle-0.15.0.jar](https://repo1.maven.org/maven2/org/apache/hudi/hudi-flink1.18-bundle/0.15.0/hudi-flink1.18-bundle-0.15.0.jar)
-
-The execution method is the same as the Hive table mentioned above.
-
 ## Clone Iceberg Tables
 
 Clone Iceberg needs dependency: [iceberg-flink-runtime-1.20-1.8.1.jar](https://repo1.maven.org/maven2/org/apache/iceberg/iceberg-flink-runtime-1.20/1.8.1/iceberg-flink-runtime-1.20-1.8.1.jar)

paimon-core/src/main/java/org/apache/paimon/migrate/Migrator.java

@@ -18,7 +18,7 @@
 
 package org.apache.paimon.migrate;
 
-/** Migrator interface for migrating table from other data-lake like hive, iceberg, hudi and etc. */
+/** Migrator interface for migrating table from other data-lake like hive, iceberg and etc. */
 public interface Migrator {
 
     void executeMigrate() throws Exception;

paimon-hive/paimon-hive-connector-common/pom.xml

@@ -571,44 +571,6 @@ under the License.
             </exclusions>
         </dependency>
 
-        <!-- for huid clone test -->
-        <dependency>
-            <groupId>org.apache.paimon</groupId>
-            <artifactId>paimon-hudi</artifactId>
-            <version>${project.version}</version>
-            <scope>test</scope>
-        </dependency>
-
-        <dependency>
-            <groupId>org.apache.hudi</groupId>
-            <artifactId>hudi-flink1.18-bundle</artifactId>
-            <version>${hudi.version}</version>
-            <scope>test</scope>
-        </dependency>
-
-        <!-- this is for huid clone test, and it should be put before hive-exec
-             for the same reason as org.apache.avro:avro. -->
-        <dependency>
-            <groupId>org.apache.parquet</groupId>
-            <artifactId>parquet-avro</artifactId>
-            <version>${parquet.version}</version>
-            <scope>test</scope>
-            <exclusions>
-                <exclusion>
-                    <groupId>org.apache.parquet</groupId>
-                    <artifactId>parquet-column</artifactId>
-                </exclusion>
-                <exclusion>
-                    <groupId>org.apache.parquet</groupId>
-                    <artifactId>parquet-common</artifactId>
-                </exclusion>
-                <exclusion>
-                    <groupId>org.apache.parquet</groupId>
-                    <artifactId>parquet-hadoop</artifactId>
-                </exclusion>
-            </exclusions>
-        </dependency>
-
         <!--
         Why we need this test dependency:
         IDEA reads classes from the same project from target/classes of that module,