NIFI-11677 Removed non required yield in DeleteHDFS

This closes #7937

Signed-off-by: David Handermann <exceptionfactory@apache.org>

nifi-nar-bundles/nifi-hadoop-bundle/nifi-hdfs-processors/src/main/java/org/apache/nifi/processors/hadoop/DeleteHDFS.java

@@ -139,7 +139,6 @@ public class DeleteHDFS extends AbstractHadoopProcessor {
         // If this processor has an incoming connection, then do not run unless a
         // FlowFile is actually sent through
         if (originalFlowFile == null && context.hasIncomingConnection()) {
-            context.yield();
             return;
         }