[gnome-boxes] help: Remove clipboard page

[Felipe Borges <felipeborges src gnome org>]

commit 2fa01ed863c18bcf7618b62462a6ae719df28b50
Author: Pranali Deshmukh <pranali21293 gmail com>
Date:   Sun Oct 4 05:36:00 2020 +0530

    help: Remove clipboard page
    
    Remove clipboard page and update interface page as this setting is gone and the
    clipboard is now always shared.
    
    Ref: #611

 help/C/clipboard.page | 47 -----------------------------------------------
 help/C/interface.page |  4 +---
 help/meson.build      |  1 -
 3 files changed, 1 insertion(+), 51 deletions(-)
---
diff --git a/help/C/interface.page b/help/C/interface.page
index a09990e8..08e00fd2 100644
--- a/help/C/interface.page
+++ b/help/C/interface.page
@@ -87,9 +87,7 @@
     <item><p><gui>General</gui>: displays the box <gui>Name</gui> and
     <gui>Broker</gui> or virtualizer being used (such as <em>QEMU</em>). For a
     remote box, this tab also displays the <gui>Protocol</gui> (such as
-    <em>VNC</em>), and the <gui>URL</gui> to be used for remote access. When
-    the box is running, the <gui>Share Clipboard</gui> switch appears
-    here.</p></item>
+    <em>VNC</em>), and the <gui>URL</gui> to be used for remote access.</p></item>
     <item><p><gui>System</gui> settings: shows running graphs of CPU, disk I/O
     and network activity. <gui>Memory</gui> and <gui>Maximum Disk Size</gui>
     sliders can be adjusted, and the <gui>Troubleshooting Log</gui> can be
diff --git a/help/meson.build b/help/meson.build
index 24cef97d..e532e488 100644
--- a/help/meson.build
+++ b/help/meson.build
@@ -1,6 +1,5 @@
 help_files = [
   'backup.page',
-  'clipboard.page',
   'create.page',
   'delete.page',
   'disk-images.page',