Webroot Theme is no longer needed

Because the $static_url scss variable is now available through the
scss namespace by default via the settings.py value for STATIC_URL,
it is no longer necessary to have an example theme on how to set
this manually.

Change-Id: I39ddfbd8e574768202233cfff09c8699486b3c01
Closes-Bug: #1478794

doc/source/topics/settings.rst

@@ -1284,13 +1284,9 @@ This value is also available in the scss namespace with the variable name
 $static_url.  Make sure you run ``python manage.py collectstatic`` and
 ``python manage.py compress`` after any changes to this value in settings.py.
 
-For your convenience, a custom theme for only setting the static url has been
-provided see: ``"/horizon/openstack_dashboard/themes/webroot"``
-
 For more information see:
 https://docs.djangoproject.com/en/1.7/ref/settings/#static-url
 
-
 ``DISALLOW_IFRAME_EMBED``
 -------------------------
 

openstack_dashboard/themes/webroot/_styles.scss

@@ -1 +0,0 @@
-@import "../themes/default/styles";

openstack_dashboard/themes/webroot/_variables.scss

@@ -1,5 +0,0 @@
-/* This variable changes the web root of horizon to /dashboard rather
-than the default '/' */
-$static_url: "/dashboard/static/";
-
-@import "../themes/default/variables";

releasenotes/notes/removal-of-webroot-theme-108db1d2f11da449.yaml

@@ -0,0 +1,11 @@
+---
+deprecations:
+    - The 'webroot' theme has been removed.
+
+fixes:
+  - The 'webroot' theme was providing an example of
+    how to set the webroot value through SCSS for
+    accessing needed static URL prefixes for assets
+    like font paths. This value is now retrieved
+    directly from the Django settings and is available
+    directly in the SCSS namespace via $static_url.