[epiphany/mcatanzaro/prefs-do-not-track] Remove obsolete do not track help page

[Michael Catanzaro <mcatanzaro src gnome org>]

commit ef212f0a205df0638cb75d0639e3134726c9bcbf
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Tue Sep 3 13:18:42 2019 -0500

    Remove obsolete do not track help page
    
    The settings described in this page are gone.

 help/C/pref-do-not-track.page | 55 -------------------------------------------
 help/meson.build              |  1 -
 2 files changed, 56 deletions(-)
---
diff --git a/help/meson.build b/help/meson.build
index abe493f85..5628a1d85 100644
--- a/help/meson.build
+++ b/help/meson.build
@@ -19,7 +19,6 @@ help_files = [
   'pref-cookies.page',
   'pref-css.page',
   'pref-downloads.page',
-  'pref-do-not-track.page',
   'pref-font.page',
   'pref-passwords.page',
   'pref-mouse-gestures.page',