fix checkstyle issue.

Author: xiezhineng

seatunnel-core/seatunnel-spark-starter/seatunnel-spark-starter-common/src/main/java/org/apache/seatunnel/core/starter/spark/SparkStarter.java

@@ -17,7 +17,6 @@
 
 package org.apache.seatunnel.core.starter.spark;
 
-import org.apache.seatunnel.plugin.discovery.seatunnel.SeaTunnelTransformPluginDiscovery;
 import org.apache.seatunnel.shade.com.typesafe.config.Config;
 
 import org.apache.seatunnel.api.common.PluginIdentifier;
@@ -33,6 +32,7 @@
 import org.apache.seatunnel.core.starter.utils.ConfigBuilder;
 import org.apache.seatunnel.plugin.discovery.seatunnel.SeaTunnelSinkPluginDiscovery;
 import org.apache.seatunnel.plugin.discovery.seatunnel.SeaTunnelSourcePluginDiscovery;
+import org.apache.seatunnel.plugin.discovery.seatunnel.SeaTunnelTransformPluginDiscovery;
 
 import org.apache.commons.lang3.StringUtils;