diff --git a/doc/hyperion-stylesheet.css b/doc/hyperion-stylesheet.css
deleted file mode 100644
index 2e81b75d..00000000
--- a/doc/hyperion-stylesheet.css
+++ /dev/null
@@ -1,472 +0,0 @@
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-    border: none;
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-
-/* Style for detailed member documentation */
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-    font-weight: normal;
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-    padding: 2px;
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-/* End Styling for detailed member documentation */
-
-/* for the tree view */
-.ftvtree {
-    font-family: sans-serif;
-    margin:0.5em;
-}
-/* these are for tree view when used as main index */
-.directory {
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-    font-weight: bold;
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-.directory h3 {
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-    margin-top: 1em;
-    font-size: 11pt;
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-
-/* The following two styles can be used to replace the root node title */
-/* with an image of your choice.  Simply uncomment the next two styles, */
-/* specify the name of your image and be sure to set 'height' to the */
-/* proper pixel height of your image. */
-
-/* .directory h3.swap { */
-/*     height: 61px; */
-/*     background-repeat: no-repeat; */
-/*     background-image: url("yourimage.gif"); */
-/* } */
-/* .directory h3.swap span { */
-/*     display: none; */
-/* } */
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-.directory img {
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-/* these are for tree view when not used as main index */
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