Remove obsolete reference to local variable support in SpEL

spring-expression/src/main/java/org/springframework/expression/spel/ast/VariableReference.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2024 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -29,8 +29,7 @@ import org.springframework.expression.spel.SpelEvaluationException;
 import org.springframework.lang.Nullable;
 
 /**
- * Represents a variable reference — for example, {@code #someVar}. Note
- * that this is different than a <em>local</em> variable like {@code $someVar}.
+ * Represents a variable reference &mdash; for example, {@code #someVar}.
  *
  * @author Andy Clement
  * @author Sam Brannen