Remove usused .css files (from previous versions)

SHA: 101ad1a
Reason: push, by garykac

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

index.html

@@ -7,7 +7,7 @@
   <link href="https://www.w3.org/StyleSheets/TR/2021/W3C-ED" rel="stylesheet">
   <meta content="Bikeshed version 6270e4735, updated Tue Aug 6 12:12:30 2024 -0700" name="generator">
   <link href="https://www.w3.org/TR/uievents/" rel="canonical">
-  <meta content="8ec09bc97f82f161e225d1fe575b1c5c336842b2" name="revision">
+  <meta content="101ad1a08ee3614d4481b676cc1d97a42f8bd887" name="revision">
   <meta content="dark light" name="color-scheme">
   <link href="https://www.w3.org/StyleSheets/TR/2021/dark.css" media="(prefers-color-scheme: dark)" rel="stylesheet" type="text/css">
 <style>