Delete mention of invalid min-height: none

Complimentary documentation PR for tailwindlabs/tailwindcss#15845.

Author: wongjn

src/docs/min-height.mdx

@@ -12,7 +12,6 @@ export const description = "Utilities for setting the minimum height of an eleme
     ["min-h-<number>", "min-height: calc(var(--spacing) * <number>);"],
     ["min-h-<fraction>", "min-height: calc(<fraction> * 100%);"],
     ["min-h-auto", "min-height: auto;"],
-    ["min-h-none", "min-height: none;"],
     ["min-h-px", "min-height: 1px;"],
     ["min-h-full", "min-height: 100%;"],
     ["min-h-screen", "min-height: 100vh;"],