Remove unused Gravity::createFromParameters()

Author: Pierstoval

src/ReferenceClasses/Gravity.php

@@ -37,11 +37,6 @@ class Gravity
      */
     private $value;
 
-    public static function createFromParameters(string $gravity): string
-    {
-        return $gravity;
-    }
-
     public function __construct(string $gravity)
     {
         $this->value = $gravity;