Revert "Fix desktop-base maintainer scripts"

This reverts commit 380c35c31d.

debian/kali-desktop-base.postinst

@@ -154,27 +154,6 @@ EOF
 	update-alternatives --remove \
 	    desktop-grub \
 	    /usr/share/desktop-base/kali-theme/grub/grub-16x9.png
-
-    elif dpkg --compare-versions "$2" lt-nl "2020.2.1"; then
-        # Remove desktop background alternatives
-        update-alternatives --remove \
-            desktop-background \
-            /usr/share/backgrounds/kali/kali-logo-16x9.png
-
-        # Remove XML version of the background alternatives
-        update-alternatives --remove \
-            desktop-background.xml \
-            /usr/share/backgrounds/kali/kali-logo.xml
-
-        # Remove login background alternatives
-        update-alternatives --remove \
-            desktop-login-background \
-            /usr/share/backgrounds/kali/kali-light.svg
-
-        # Remove XML version of the login background alternatives
-        update-alternatives --remove \
-            desktop-lockscreen.xml \
-            /usr/share/backgrounds/kali/kali-light.xml
     fi
 fi
 

debian/kali-desktop-base.prerm

@@ -10,17 +10,17 @@ if [ "$1" = "remove" ]; then
     # Remove background alternatives for theme packages
     update-alternatives --remove \
 	desktop-background \
-	/usr/share/wallpapers/KaliLogo/contents/images/kali-logo-16x9.png
+	/usr/share/backgrounds/kali/kali-logo-16x9.png
 
     # Remove desktop-background.xml alternatives
     update-alternatives --remove \
 	desktop-background.xml \
-	/usr/share/wallpapers/KaliLogo/gnome-background.xml
+	/usr/share/backgrounds/kali/kali-logo.xml
 
     # Remove desktop-lockscreen.xml alternatives
     update-alternatives --remove \
 	desktop-lockscreen.xml \
-	/usr/share/wallpapers/KaliLight/gnome-background.xml
+	/usr/share/backgrounds/kali/kali-light.xml
 
     # Remove Plasma 5/KDE wallpaper alternatives
     update-alternatives --remove \
@@ -30,7 +30,7 @@ if [ "$1" = "remove" ]; then
     # Remove login theme alternatives
     update-alternatives --remove \
 	desktop-login-background \
-	/usr/share/wallpapers/KaliLight/contents/kali-light.svg
+	/usr/share/backgrounds/kali/kali-light.svg
 
     # Remove GRUB alternatives
     update-alternatives --remove \