Issue with "Custom Metaboxes and Fields for WordPress" Script

I’m having an issue with a script that I think is bundled with sweetdate theme. CMB or “Custom Metaboxes and Fields for WordPress”

It seems this script is loading on ALL post editor screens, so it is, for me, interfering with some plugins and also the “testimonial” functionality in the theme. For example, I can’t upload media on the testimonial page. or for my plug-in The Events Calendar.

Is that script indeed required every time the post editor loads and for every post type? If not, can you provide code to either restrict it only to those where they know it is needed, or else prevent it from being loaded on the testimonial editor and for my Events Calendar editor?

Thanks in advance for any guidance on this point. I appreciate your help very much!
Timothy