Cleanup of useless files in the binary package lib directory. (#5430)

dolphinscheduler-dist/src/main/assembly/dolphinscheduler-bin.xml

@@ -216,6 +216,7 @@
             <outputDirectory>lib</outputDirectory>
             <useProjectArtifact>true</useProjectArtifact>
             <excludes>
+                <exclude>org.apache.dolphinscheduler:dolphinscheduler-dist</exclude>
                 <exclude>javax.servlet:servlet-api</exclude>
                 <exclude>org.eclipse.jetty.aggregate:jetty-all</exclude>
                 <exclude>org.slf4j:slf4j-log4j12</exclude>