[evince/wip/chpe/build-fixes-2: 5/6] build: Remove cruft

[Christian Persch <chpe src gnome org>]

commit 2a12f93116b1ab65ddd81847a7acd7319f077877
Author: Christian Persch <chpe src gnome org>
Date:   Wed Nov 17 00:41:59 2021 +0100

    build: Remove cruft
    
    The shell code is not an installed shared library, so it has no use for
    a reference documentation.  Since also this documentation hasn't been
    updated in forever, and is the only reason shell/meson.build creates a
    'libshell' shared library (which the next commit is going to remove),
    let's remove this extraneous directory.

 help/meson.build                         |   3 -
 help/reference/shell/evince-docs.xml     | 157 -------------
 help/reference/shell/evince-sections.txt | 384 -------------------------------
 help/reference/shell/evince.types        |  19 --
 help/reference/shell/meson.build         |  34 ---
 help/reference/shell/version.xml.in      |   1 -
 6 files changed, 598 deletions(-)
---
diff --git a/help/meson.build b/help/meson.build
index 84c86fd13..c7db45f2e 100644
--- a/help/meson.build
+++ b/help/meson.build
@@ -14,9 +14,6 @@ if enable_gtk_doc
 
   subdir('reference/libdocument')
   subdir('reference/libview')
-  if enable_viewer
-    subdir('reference/shell')
-  endif
 endif
 
 if enable_user_doc