Moved split-pane-mode.less file into a .scss file. Removed remaining unused .less files. Removed reference to less file in webpack config. Removed dependency on less-loader. Updated standalone and bundle builds to no longer compile any styles.

src/style/_split-pane-mode.scss

@@ -0,0 +1,3 @@
+.Resizer.vertical.disabled {
+  display: none;
+}

src/style/main.scss

@@ -14,4 +14,5 @@
     @import 'information';
     @import 'authorize';
     @import 'errors';
+    @import 'split-pane-mode';
 }