Remove customer attribute in magento 2

Question

How to remove customer attributes which are created during install 3rd party extention in magento 2?

Answer 1

Try This :-

namespace Company\Modulename\Setup 

class Uninstall implements \Magento\Framework\Setup\UninstallInterface
{

    protected $eavSetupFactory;

    public function __construct(\Magento\Eav\Setup\EavSetupFactory $eavSetupFactory)
    {
          $this->eavSetupFactory = $eavSetupFactory;
    }

    public function uninstall(\Magento\Framework\Setup\SchemaSetupInterface $setup, \Magento\Framework\Setup\ModuleContextInterface $context)
    {
         $setup->startSetup();
         $eavSetup = $this->eavSetupFactory->create();       
         $entityTypeId = 1; // Attributte Id
         $eavSetup->removeAttribute($entityTypeId, 'attribute_code');
         $setup->endSetup();
    }
}

Answer 2

You can create either an upgrade or install script in your custom module. Here an example with an install script:

<?php

 namespace vendor\module\Setup;

 use Magento\Eav\Setup\EavSetup;
 use Magento\Eav\Setup\EavSetupFactory;
 use Magento\Framework\Setup\InstallDataInterface;
 use Magento\Framework\Setup\ModuleContextInterface;
 use Magento\Framework\Setup\ModuleDataSetupInterface;

 class InstallData implements InstallDataInterface
 {
 private $eavSetupFactory;

 public function __construct(EavSetupFactory $eavSetupFactory) 
 {
 $this->eavSetupFactory = $eavSetupFactory;
 }

 public function install(ModuleDataSetupInterface $setup, ModuleContextInterface $context)
 {

 $setup->startSetup();

 $eavSetup = $this->eavSetupFactory->create(['setup' => $setup]);
 $eavSetup->removeAttribute(
 \Magento\Customer\Model\Customer::ENTITY,
 'custom_attribute');

 $setup->endSetup();

 }
 }