docs: document ownCloud Web for Infinite Scale only

The web app has been removed and ownCloud Web is no longer available for
ownCloud Classic. Drop the "ownCloud Web on ownCloud Classic" page and all
references to installing the web app on oc10.

Signed-off-by: Thomas Müller <1005065+DeepDiver1975@users.noreply.github.com>

Author: DeepDiver1975

modules/owncloud_web/pages/index.adoc

@@ -6,11 +6,9 @@
 
 {description}
 
-If you are still running ownCloud Classic, consider installing the {oc-marketplace-url}/apps/web[Web] app, which provides the new look and feel plus some additional features, but not everything ownCloud Web has to offer when used with Infinite Scale. For a quick introduction about what's new or different, check out the section xref:web_with_oc_server.adoc[ownCloud Web on ownCloud Classic].
-
 == Changes
 
-For readers already familiar with ownCloud Classic and its standard web interface, the big differences in the new ownCloud Web on Infinite Scale are:
+For readers already familiar with ownCloud Classic and its standard web interface, the big differences in the new ownCloud Web are:
 
 * Spaces: Spaces are special folders for teams. They are organized by the team members themselves so that admins don't need to manage them. Even if members leave, the files stay in place so your team can keep on working.
 * Simplified links: Just select if only invited people or everyone can access a link. In consequence, we no longer distinguish between private and public links.

modules/owncloud_web/pages/web_for_users.adoc

@@ -12,8 +12,6 @@ If this file gets relocated or renamed, a page alias must be added to make it av
 
 {description}
 
-If you have been using ownCloud before but with the ownCloud Classic user interface, you may want to check out section xref:web_with_oc_server.adoc[ownCloud Web with ownCloud Classic] to get an overview of the main differences.
-
 The following description assumes you're new to ownCloud.
 
 image::web-for-users/personal-space.png[Start Page,width=500]

modules/owncloud_web/pages/web_with_oc_server.adoc

@@ -2,6 +2,5 @@
 * ownCloud Web
 ** xref:owncloud_web:index.adoc[Introduction]
 ** xref:owncloud_web:requirements.adoc[Requirements]
-** xref:owncloud_web:web_with_oc_server.adoc[ownCloud Web on ownCloud Classic]
 ** xref:owncloud_web:web_for_users.adoc[ownCloud Web for Users]
 ** xref:owncloud_web:web_for_admins.adoc[ownCloud Web for Admins]