fixed tabmanager icon styling

packages/docregistry/src/registry.ts

@@ -1366,7 +1366,6 @@ export namespace DocumentRegistry {
       displayName: 'Image',
       mimeTypes: ['image/tiff'],
       extensions: ['.tif', '.tiff'],
-      iconClass: 'jp-MaterialIcon jp-ImageIcon',
       iconRenderer: imageIcon,
       fileFormat: 'base64'
     },

packages/tabmanager-extension/style/base.css

@@ -58,12 +58,6 @@
   background: var(--jp-brand-color1);
 }
 
-#tab-manager .p-TabBar-tabIcon,
-#tab-manager .p-TabBar-tabLabel,
-#tab-manager .p-TabBar-tabCloseIcon {
-  display: inline-block;
-}
-
 #tab-manager .p-TabBar-tabLabel {
   line-height: var(--jp-private-tab-manager-tab-height);
   padding-left: 4px;