The posted solution does remove the CSS, but does not fix the fact that TEC is still adding this weird batch of CSS.
Weirdly enough, in our dev site we dont have the PRO version installed (we’re not allowed to) but we still get this injected into the <head>:
<style type="text/css" id="tribe_events_pro_customizer_css">
This is the site I’m referring to: https://njama.leosaraceni.net/event/mix-mingle-9-22-16/
For now, I wrote a couple !important rules to override the customizer css and it’s fine, but a more permanent fix would be appreciated.