refactor(zensical): remove navigation tabs

Author: leodevian

template/{% if docs == 'zensical' %}zensical.toml{% endif %}.jinja

@@ -39,8 +39,6 @@ features = [
   "navigation.instant.prefetch",
   "navigation.path",
   "navigation.sections",
-  "navigation.tabs",
-  "navigation.tabs.sticky",
   "navigation.top",
   "navigation.tracking",
   "search.highlight",