tickets: remove beige background from ticket tiers container

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: clytaemnestra

src/components/ticket-tiers/ticket-tiers.astro

@@ -235,13 +235,6 @@ const formatPrice = (price: number | string) => {
     /*transform: translateX(-50%);*/
     position: relative;
     /*padding: 0 40px;*/
-    background: linear-gradient( to top,
-rgba(245, 229, 214, 0) 0%,
-rgb(245, 229, 214) 5%,
-rgb(245, 229, 214) 95%,
-rgba(245, 229, 214, 0
-) 100% )
-;
   }
 
   @media (max-width: 1023px) {