How to disable Jetpack upsell ads

We live in a world of monetized Jetpack. Gone are the days where commercialized plugins were looked at under a watchful microscope, and leadership at Automattic felt that charging for plugins was, well, plain wrong. Today we’re seeing Jetpack as the revenue bridge between .org and .com offerings — and a very big bridge at that.
A reading episode of this article:
As the Jetpack team continues to sharpen its marketing fangs around the plugin’s messaging, we’ve seen more meat on the bones of upsell nags.
See, I’ve received an uptick of customers and friends I’ve helped onboard to WordPress, question its security. Why? Because Jetpack is prompting to upgrade users to their paid backup and security services.
Obviously, I have mixed feelings about this, of which, I’ll save for the end of this post. For now, here’s how you can turn off those nagging Jetpack upsell ads.
CODE to disable Jetpack upsell ads
TL;DR (Sorry, you’ll need to get out your text editor for this one.) Look inside jetpack/class.jetpack-jitm.php, for the filter ‘jetpack_just_in_time_msgs’ See this GitHub link.
It won’t come easy for the non-technical
Source: https://managewp.org/articles/16106/how-to-disable-jetpack-upsell-ads

source https://williechiu40.wordpress.com/2017/09/17/how-to-disable-jetpack-upsell-ads/