Remove/Delete Product Attribute Options in Magento 2

RemoveOptions.php

<?php

namespace Vendor\ModuleName\Options;

use Magento\Eav\Setup\EavSetupFactory;
use Magento\Framework\Setup\ModuleDataSetupInterface;
use Magento\Catalog\Model\ResourceModel\Eav\AttributeFactory;

class RemoveOptions
{
    /**
     * EAV setup factory
     *
     * @var EavSetupFactory
     */
    protected $eavSetupFactory;

    /**
     * EAV product attribute factory
     *
     * @var AttributeFactory
     */
    protected $attributeFactory;
	
    /**
     * EAV Setup Interface
     *
     * @var ModuleDataSetupInterface
     */
    protected $setupInterface;

    /**
     * Init
     *
     * @param EavSetupFactory $eavSetupFactory
     * @param AttributeFactory $attributeFactory
     * @param ModuleDataSetupInterface $setupInterface
     */
    public function __construct(
        EavSetupFactory $eavSetupFactory,
        AttributeFactory $attributeFactory,
	ModuleDataSetupInterface $setupInterface
    )
    {
        $this->eavSetupFactory = $eavSetupFactory;
        $this->attributeFactory = $attributeFactory;
        $this->setupInterface = $setupInterface;
    }
	
    /**
     * delete options from an attribute
     *
     * @param ModuleDataSetupInterface $setup
     */
    public function deleteOptions()
    {
	    $setup = $this->setupInterface;
            /** @var \Magento\Eav\Setup\EavSetup $eavSetup */
            $eavSetup = $this->eavSetupFactory->create(['setup' => $setup]);

            $entityTypeId = $eavSetup->getEntityTypeId(\Magento\Catalog\Api\Data\ProductAttributeInterface::ENTITY_TYPE_CODE);

	    // your attribute code
            $attributeCode = 'my_already_existing_attribute';
			
	    // IMPORTANT:
	    // use $this->attributeFactory->create() before loading the attribute,
	    // or else the options you want to delete will be cached and you cannot 
	    // delete other options from a second attribute in the same request
            $attribute = $this->attributeFactory->create()->loadByCode($entityTypeId, $attributeCode);
			
            $options = $attribute->getOptions();
			
            $optionsToRemove = [];
            foreach($options as $option)
            {
                if ($option['value'])
                {
                    $optionsToRemove['delete'][$option['value']] = true;
                    $optionsToRemove['value'][$option['value']] = true;
                }
            }
            $eavSetup->addAttributeOption($optionsToRemove);			
    }
}