removed compatibility for old class names

src/DI/Config/Adapter.php

@@ -20,6 +20,3 @@ interface Adapter
 	 */
 	function load(string $file): array;
 }
-
-
-class_exists(IAdapter::class);

src/DI/Definitions/ServiceDefinition.php

@@ -215,6 +215,3 @@ public function __clone()
 		$this->setup = unserialize(serialize($this->setup));
 	}
 }
-
-
-class_exists(Nette\DI\ServiceDefinition::class);

src/DI/Definitions/Statement.php

@@ -63,6 +63,3 @@ public function getEntity(): string|array|Definition|Reference|null
 		return $this->entity;
 	}
 }
-
-
-class_exists(Nette\DI\Statement::class);