remove medium text weight

Author: Rich-Harris

packages/site-kit/src/lib/styles/index.css

@@ -27,12 +27,6 @@
 	font-style: italic;
 }
 
-@font-face {
-	font-family: 'Tiempos Text';
-	src: url(./fonts/test-tiempos-text-medium.woff2);
-	font-weight: 500;
-}
-
 @font-face {
 	font-family: 'Tiempos Headline';
 	src: url(./fonts/test-tiempos-headline-medium.woff2);