[accerciser] help: Remove unused image

[Andre Klapper <aklapper src gnome org>]

commit 7a6490a417f350dfdfd27b33a8789e3254526187
Author: Andre Klapper <a9016009 gmx de>
Date:   Sun Mar 24 16:05:38 2019 +0100

    help: Remove unused image

 help/C/figures/event_monitor.png | Bin 131303 -> 0 bytes
 help/Makefile.am                 |   1 -
 2 files changed, 1 deletion(-)
---
diff --git a/help/Makefile.am b/help/Makefile.am
index 794ced1..cbd0eaa 100644
--- a/help/Makefile.am
+++ b/help/Makefile.am
@@ -15,7 +15,6 @@ HELP_MEDIA = \
        figures/tree_view_accerciser.png \
        figures/event_monitor_plugin.png \
        figures/validator_app_tree.png \
-       figures/event_monitor.png \
        figures/validator_report.png \
        figures/global-hotkeys.png