Remove @Service annotation from null provider command base class

Change-Id: I18842cb2ef1239861ad00b2efbc8ac47c6503d6f
diff --git a/providers/null/src/main/java/org/onosproject/provider/nil/cli/CreateNullEntity.java b/providers/null/src/main/java/org/onosproject/provider/nil/cli/CreateNullEntity.java
index 237c79d..a9efa78 100644
--- a/providers/null/src/main/java/org/onosproject/provider/nil/cli/CreateNullEntity.java
+++ b/providers/null/src/main/java/org/onosproject/provider/nil/cli/CreateNullEntity.java
@@ -17,7 +17,6 @@
 
 import com.google.common.collect.ImmutableList;
 import com.google.common.primitives.Longs;
-import org.apache.karaf.shell.api.action.lifecycle.Service;
 import org.onlab.util.Tools;
 import org.onosproject.cli.AbstractShellCommand;
 import org.onosproject.net.ConnectPoint;
@@ -34,7 +33,6 @@
 /**
  * Base command for adding simulated entities to the custom topology simulation.
  */
-@Service
 public abstract class CreateNullEntity extends AbstractShellCommand {
 
     protected static final String GEO = "geo";