minor improvement: remove unsued imports in WhiteboardIndexEditorProvider
@@ -21,9 +21,6 @@ package org.apache.jackrabbit.oak.plugins.index;
import javax.annotation.Nonnull;
import org.apache.jackrabbit.oak.api.CommitFailedException;
-import org.apache.jackrabbit.oak.plugins.index.CompositeIndexEditorProvider;
-import org.apache.jackrabbit.oak.plugins.index.IndexEditorProvider;
-import org.apache.jackrabbit.oak.plugins.index.IndexUpdateCallback;
import org.apache.jackrabbit.oak.spi.commit.Editor;
import org.apache.jackrabbit.oak.spi.state.NodeBuilder;
import org.apache.jackrabbit.oak.spi.state.NodeState;
