diff --git a/libraries/CMSIS/Documentation/General/html/navtree.css b/libraries/CMSIS/Documentation/General/html/navtree.css
deleted file mode 100644
--- a/libraries/CMSIS/Documentation/General/html/navtree.css
+++ /dev/null
@@ -1,143 +0,0 @@
-#nav-tree .children_ul {
-  margin:0;
-  padding:4px;
-}
-
-#nav-tree ul {
-  list-style:none outside none;
-  margin:0px;
-  padding:0px;
-}
-
-#nav-tree li {
-  white-space:nowrap;
-  margin:0px;
-  padding:0px;
-}
-
-#nav-tree .plus {
-  margin:0px;
-}
-
-#nav-tree .selected {
-  background-image: url('tab_a.png');
-  background-repeat:repeat-x;
-  color: #fff;
-  text-shadow: 0px 1px 1px rgba(0, 0, 0, 1.0);
-}
-
-#nav-tree img {
-  margin:0px;
-  padding:0px;
-  border:0px;
-  vertical-align: middle;
-}
-
-#nav-tree a {
-  text-decoration:none;
-  padding:0px;
-  margin:0px;
-  outline:none;
-}
-
-#nav-tree .label {
-  margin:0px;
-  padding:0px;
-  font: 12px 'Lucida Grande',Geneva,Helvetica,Arial,sans-serif;
-}
-
-#nav-tree .label a {
-  padding:2px;
-}
-
-#nav-tree .selected a {
-  text-decoration:none;
-  color:#fff;
-}
-
-#nav-tree .children_ul {
-  margin:0px;
-  padding:0px;
-}
-
-#nav-tree .item {
-  margin:0px;
-  padding:0px;
-}
-
-#nav-tree {
-  padding: 0px 0px;
-  background-color: #FAFAFF; 
-  font-size:14px;
-  overflow:auto;
-}
-
-#doc-content {
-  overflow:auto;
-  display:block;
-  padding:0px;
-  margin:0px;
-  -webkit-overflow-scrolling : touch; /* iOS 5+ */
-}
-
-#side-nav {
-  padding:0 6px 0 0;
-  margin: 0px;
-  display:block;
-  position: absolute;
-  left: 0px;
-  width: 250px;
-}
-
-.ui-resizable .ui-resizable-handle {
-  display:block;
-}
-
-.ui-resizable-e {
-  background:url("ftv2splitbar.png") repeat scroll right center transparent;
-  cursor:e-resize;
-  height:100%;
-  right:0;
-  top:0;
-  width:6px;
-}
-
-.ui-resizable-handle {
-  display:none;
-  font-size:0.1px;
-  position:absolute;
-  z-index:1;
-}
-
-#nav-tree-contents {
-  margin: 6px 0px 0px 0px;
-}
-
-#nav-tree {
-  background-image:url('nav_h.png');
-  background-repeat:repeat-x;
-  background-color: #F9FAFC;
-  -webkit-overflow-scrolling : touch; /* iOS 5+ */
-}
-
-#nav-sync {
-  position:absolute;
-  top:5px;
-  right:24px;
-  z-index:0;
-}
-
-#nav-sync img {
-  opacity:0.3;
-}
-
-#nav-sync img:hover {
-  opacity:0.9;
-}
-
-@media print
-{
-  #nav-tree { display: none; }
-  div.ui-resizable-handle { display: none; position: relative; }
-}
-