Remove unused

Author: nik9000

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/expression/function/EsqlFunctionRegistry.java

@@ -1038,24 +1038,6 @@ protected interface UnaryVariadicBuilder<T> {
         T build(Source source, Expression exp, List<Expression> variadic);
     }
 
-    /**
-     * Build a {@linkplain FunctionDefinition} for functions with two mandatory arguments followed by a varidic list.
-     */
-    @SuppressWarnings("overloads")  // These are ambiguous if you aren't using ctor references but we always do
-    protected static <T extends Function> FunctionDefinition def(Class<T> function, BinaryVariadicBuilder<T> ctorRef, String... names) {
-        FunctionBuilder builder = (source, children, cfg) -> {
-            if (children.size() < 3) {
-                throw new QlIllegalArgumentException("expects at least two arguments");
-            }
-            return ctorRef.build(source, children.get(0), children.get(1), children.subList(2, children.size()));
-        };
-        return def(function, builder, names);
-    }
-
-    protected interface BinaryVariadicBuilder<T> {
-        T build(Source source, Expression exp1, Expression exp2, List<Expression> variadic);
-    }
-
     protected interface BinaryVariadicWithOptionsBuilder<T> {
         T build(Source source, Expression exp, List<Expression> variadic, Expression options);
     };

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/expression/function/scalar/math/RoundTo.java

@@ -40,7 +40,7 @@
 import static org.elasticsearch.xpack.esql.type.EsqlDataTypeConverter.commonType;
 
 /**
- * Round down to a list of points.
+ * Round down to one of a list of values.
  */
 public class RoundTo extends EsqlScalarFunction {
     public static final NamedWriteableRegistry.Entry ENTRY = new NamedWriteableRegistry.Entry(Expression.class, "RoundTo", RoundTo::new);