moves the become a member button on mobile from the bar to the hamburger

[seesjays]

Describe your PR request 🔥 jorell recommended taking out the button to match the figma

Mobile & Desktop Screenshots/Recordings 📷 https://www.loom.com/share/d7695723e25344a5bff2b885a537e01a?sid=3a226dc9-83ec-44b5-8d18-1d64abbeb4ae