[accerciser] help: Remove unused screenshots which just blow the tarball

[Andre Klapper <aklapper src gnome org>]

commit b08c7e33844e07022836a2594cc8397e87c64e53
Author: Andre Klapper <a9016009 gmx de>
Date:   Thu Jan 9 15:55:50 2020 +0100

    help: Remove unused screenshots which just blow the tarball

 help/C/figures/accessible_tree.png    | Bin 151453 -> 0 bytes
 help/C/figures/validator_app_tree.png | Bin 220905 -> 0 bytes
 help/Makefile.am                      |   2 --
 3 files changed, 2 deletions(-)
---
diff --git a/help/Makefile.am b/help/Makefile.am
index 2712432..fcec220 100644
--- a/help/Makefile.am
+++ b/help/Makefile.am
@@ -7,11 +7,9 @@ HELP_MEDIA = \
        figures/interface_viewer_plugin.png \
        figures/accerciser-view.png \
        figures/IPython_plugin.png \
-       figures/accessible_tree.png \
        figures/api_browser.png \
        figures/tree_view_accerciser.png \
        figures/event_monitor_plugin.png \
-       figures/validator_app_tree.png \
        figures/validator_report.png 
 
 HELP_FILES = \