remove dead imports

Signed-off-by: Kaushal Kumar <ravi.kaushal97@gmail.com>

Author: kaushalmahi12

plugins/workload-management/src/main/java/org/opensearch/plugin/wlm/AutoTaggingActionFilter.java

@@ -11,14 +11,12 @@
 import org.opensearch.action.ActionRequest;
 import org.opensearch.action.IndicesRequest;
 import org.opensearch.action.search.SearchRequest;
-import org.opensearch.action.search.SearchScrollRequest;
 import org.opensearch.action.support.ActionFilter;
 import org.opensearch.action.support.ActionFilterChain;
 import org.opensearch.core.action.ActionListener;
 import org.opensearch.core.action.ActionResponse;
 import org.opensearch.plugin.wlm.rule.attribute_extractor.IndicesExtractor;
 import org.opensearch.rule.InMemoryRuleProcessingService;
-import org.opensearch.search.internal.SearchContext;
 import org.opensearch.tasks.Task;
 import org.opensearch.threadpool.ThreadPool;
 import org.opensearch.wlm.WorkloadGroupTask;