Merge remote-tracking branch 'refs/remotes/not-napoleon/esql-skip-null-metrics' into esql-skip-null-metrics

Author: not-napoleon

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/analysis/IgnoreNullMetrics.java

@@ -10,7 +10,6 @@
 import org.elasticsearch.index.IndexMode;
 import org.elasticsearch.xpack.esql.core.expression.Attribute;
 import org.elasticsearch.xpack.esql.core.expression.Expression;
-import org.elasticsearch.xpack.esql.core.tree.Node;
 import org.elasticsearch.xpack.esql.core.tree.Source;
 import org.elasticsearch.xpack.esql.expression.predicate.logical.Or;
 import org.elasticsearch.xpack.esql.expression.predicate.nulls.IsNotNull;