src/ItePHP/Component/Form/FormField.php
public function removeClass($name){
		$classParts=explode(' ',$this->tags['class']);
		$className='';
		foreach($classParts as $part){
			if($name!=$part){
				$className.=' '.$part;
			}
		}

		$this->tags['class']=trim($className);

	}
public function removeClass($name){
		$classParts=explode(' ',$this->tags['class']);
		$className='';
		foreach($classParts as $part){
			if($name!=$part){
				$className.=' '.$part;
			}
		}

		$this->tags['class']=trim($className);

	}
Remove part html tag class

@param string $name - class name: