I'd like to remove what is paypal text and paypal logo from checkout.
I found it in
vendor\magento\module-paypal\view\frontend\templates\payment\mark.pthml
I tried comment out the codes but nothing has changed. I flushed all caches and browser history.
Thank you
It's not a good practice to change files in vendor folder for many reasons!
You have to copy that file into your theme:
app/design/frontend/Vendor/Theme/Magento_Paypal/templates/payment/mark.phtml and comment the code for showing this text.
Then execute php bin/magento setup:static-content:deploy and flush all caches to apply the changes
Correct answer for Magento2 is to copy
vendor/magento/module-paypal/view/frontend/web/template/payment/paypal-express.html
to your Vendor/Theme/Magento_Paypal/web/template/payment folder and amend as required. Or other template file if using a different PayPal method.
If in developer mode, no need to (and shouldn't!) deploy static content. Just clear FPC if enabled.
