Remove upstreamed grace helper

See https://trisquel.info/en/issues/20736 for further details

helpers/DATA/gnome-menus/09_app_install_entry.patch

@@ -1,33 +0,0 @@
-Index: gnome-menus-2.28.0/layout/applications.menu
-===================================================================
---- gnome-menus-2.28.0.orig/layout/applications.menu	2009-09-24 11:34:44.000000000 +0200
-+++ gnome-menus-2.28.0/layout/applications.menu	2009-09-24 11:34:44.000000000 +0200
-@@ -157,4 +157,16 @@
-     <Directory>Debian.directory</Directory>
-   </Menu>
- 
-+<Include>
-+  <Filename>gnome-app-install.desktop</Filename>
-+</Include>
-+
-+<!-- Separator between menus and gnome-app-install -->
-+<Layout>
-+  <Merge type="menus"/>
-+  <Merge type="files"/>
-+  <Separator/>
-+  <Filename>gnome-app-install.desktop</Filename>
-+</Layout>
-+
- </Menu> <!-- End Applications -->
-Index: gnome-menus-2.28.0/layout/settings.menu
-===================================================================
---- gnome-menus-2.28.0.orig/layout/settings.menu	2009-09-24 11:34:47.000000000 +0200
-+++ gnome-menus-2.28.0/layout/settings.menu	2009-09-24 11:35:22.000000000 +0200
-@@ -43,6 +43,7 @@
-       <And>
-         <Category>Settings</Category>
-         <Category>System</Category>
-+        <Not><Filename>gnome-app-install.desktop</Filename></Not>
-       </And>
-     </Include>
-   </Menu>     <!-- End System Settings -->

helpers/DATA/gnome-menus/99_trisquel_defaults.patch

@@ -1,30 +0,0 @@
-diff -ru gnome-menus-3.2.0.orig/layout/applications.menu gnome-menus-3.2.0/layout/applications.menu
---- gnome-menus-3.2.0.orig/layout/applications.menu	2012-03-09 23:09:57.000000000 +0000
-+++ gnome-menus-3.2.0/layout/applications.menu	2012-03-09 23:20:35.000000000 +0000
-@@ -236,7 +236,7 @@
-     </Include>
-   </Menu> <!-- End Office -->
- 
--  <!-- System Tools-->
-+  <!-- System Tools is disabled in Trisquel, goes into gnome-control-center
-   <Menu>
-     <Name>System</Name>
-     <Directory>System-Tools.directory</Directory>
-@@ -247,7 +247,7 @@
- 	<Not><Category>Game</Category></Not>
-       </And>
-     </Include>
--  </Menu>   <!-- End System Tools -->
-+  </Menu>   End System Tools -->
- 
-   <!-- Other -->
-   <Menu>
-@@ -257,7 +257,7 @@
-     <Include>
-       <And>
-         <Not><Category>Core</Category></Not>
--        <Not><Category>Screensaver</Category></Not>
-+        <Not><Category>Screensaver</Category></Not> <Not><Category>System</Category></Not> <Not><Category>Settings</Category></Not>
-         <Not><Category>X-GNOME-Settings-Panel</Category></Not>
-       </And>
-     </Include>