[DeadCode] Add RemoveParentDelegatingClassMethodRector

[TomasVotruba]

Complements RemoveParentDelegatingConstructorRector, which only handles __construct(). Any other method whose body is a single parent::sameMethod($sameParams) call does nothing either.

 final class SomeCommand extends Command
 {
-    protected function configure(): void
-    {
-        parent::configure();
-    }
 }

Return-value delegation is covered too:

 final class SomeReader extends AbstractReader
 {
-    public function read(string $path): string
-    {
-        return parent::read($path);
-    }
 }

Skipped when removal would change behavior or signature:

• __construct() (other rule owns it)
• final, abstract, private, by-ref returning methods
• body with more than the single parent call, or delegating to a different parent method
• visibility or static-ness differing from parent (public function configure() over a protected parent)
• param type / return type narrower than parent
• params with defaults, variadic, by-ref, or attributes
• method attributes, or @param/@return docblocks refining types