diff --git a/assets/styles/tree.scss b/assets/styles/tree.scss
deleted file mode 100644
index 3e507fa2a..000000000
--- a/assets/styles/tree.scss
+++ /dev/null
@@ -1,119 +0,0 @@
-/* simple tree */
-.simple-tree {
- user-select: none;
- -moz-user-select: none;
-}
-.simple-tree>details>summary {
- display: none;
-}
-.simple-tree a,
-.simple-tree summary {
- display: block;
- width: fit-content;
- width: -moz-fit-content;
- border: solid 1px transparent;
- padding: 0 2px;
- outline: none;
- cursor: pointer;
-}
-.simple-tree a {
- text-decoration: none;
- // color: inherit;
- font-weight: 600;
- font-size: .9rem;
-}
-.simple-tree ::-webkit-details-marker {
- display: none;
-}
-.simple-tree summary {
- list-style-type: none;
- // background-color: #eee;
- outline: none;
-}
-.simple-tree.dark summary {
- background-color: #444;
-}
-.simple-tree details>:not(details),
-.simple-tree details {
- position: relative;
-}
-.simple-tree details :not(summary) {
- margin-left: 20px;
-}
-.simple-tree.nodots details :not(summary) {
- margin-left: 12px;
-}
-.simple-tree details::before,
-.simple-tree details>:not(details)::before {
- content: '';
- width: 10px;
- display: block;
- position: absolute;
-}
-.simple-tree details::before,
-.simple-tree details>:not(details)::before {
- // background: url('data:image/svg+xml;utf8,') left top / 2px 2px;
-}
-.simple-tree.dark details::before,
-.simple-tree.dark details>:not(summary)::before {
- background-image: url('data:image/svg+xml;utf8,');
-}
-.simple-tree.nodots details::before,
-.simple-tree.nodots details>:not(summary)::before {
- background-image: none;
-}
-.simple-tree details::before {
- top: 0;
- height: 100%;
- background-repeat: repeat-y;
- left: 5px;
- z-index: -1;
-}
-.simple-tree details>:not(details)::before {
- top: 8px;
- height: calc(100% - 8px);
- background-repeat: repeat-x;
- left: -15px;
-}
-.simple-tree details>summary::before {
- // background: url('data:image/svg+xml;utf8,') center center / 12px 12px no-repeat;
- background: url('data:image/svg+xml;utf8,')center center / 12px 12px no-repeat;
- left: -22px;
- top: 2px;
- width: 16px;
- height: 16px;
-}
-.simple-tree details[open]>summary::before {
- background: url('data:image/svg+xml;utf8,') center center / 12px 12px no-repeat;
- // background-image: url('data:image/svg+xml;utf8,');
-
-}
-/* async tree */
-.async-tree details[open][data-loaded=false] {
- pointer-events: none;
-}
-.async-tree details[open][data-loaded=false]>summary::before {
- background-image: url('data:image/svg+xml;utf8,');
-}
-.async-tree.black details[open][data-loaded=false]>summary::before {
- background-image: url('data:image/svg+xml;utf8,');
-}
-/* select tree */
-.select-tree .selected {
- // background-color: #beebff;
- border: var(--outlinegray)1px solid;
- border-radius: 5px;
- // z-index: 1;
-}
-
-.select-tree.dark .selected {
- // background-color: #3a484e;
- border-color: #99defd;
- border-radius: 5px;
-}
-
-.selectedOnPage {
- // background-color: #3a484e;
- border-color: #99defd;
-}