[CLEANUP] Final removal of DeclarationBlock::getSelector

Signed-off-by: Daniel Ziegenberg <daniel@ziegenberg.at>

Author: ziegenberg

CHANGELOG.md

@@ -21,6 +21,7 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 ### Removed
 
 - Drop support for PHP < 7.2 (#420)
+- Final removal of `DeclarationBlock::getSelector()` (#559)
 
 ### Fixed
 

src/RuleSet/DeclarationBlock.php

@@ -146,16 +146,6 @@ public function removeSelector($mSelector)
         return false;
     }
 
-    /**
-     * @return array<int, Selector|string>
-     *
-     * @deprecated will be removed in version 9.0; use `getSelectors()` instead
-     */
-    public function getSelector()
-    {
-        return $this->getSelectors();
-    }
-
     /**
      * @param Selector|string $mSelector
      * @param CSSList|null $oList