[etherpad-web/oscp-backend] Drop ep_copy_paste_images

[Bartłomiej Piotrowski <bpiotrowski src gnome org>]

commit 8caf37b4a810ad4f86580d134e3de7b4468d7924
Author: Bartłomiej Piotrowski <bpiotrowski gnome org>
Date:   Wed May 13 13:17:33 2020 +0200

    Drop ep_copy_paste_images

 Dockerfile | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
---
diff --git a/Dockerfile b/Dockerfile
index 5c7b063..1243346 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -31,8 +31,7 @@ RUN npm install ep_adminpads \
     ep_headings2 \
     ep_font_color \
     ep_markdown \
-    ep_copy_paste_select_all \
-    ep_copy_paste_images
+    ep_copy_paste_select_all
 
 USER etherpad
 EXPOSE 9001