disable-programs.inc: remove duplicated entries

They are already present in disable-common.inc.

Added in the following commits:

* 6bf6d5e ("updated program files", 2016-12-02) / PR netblue30#951
* 4928019 ("various hardening (netblue30#3394)", 2020-05-02)
* 2e2c232 ("profiles: support more msmtp configuration paths (netblue30#6060)",
  2023-10-22)

Misc: This was noticed on PR netblue30#6060.

etc/inc/disable-programs.inc

@@ -22,7 +22,6 @@ blacklist ${HOME}/.Steampid
 blacklist ${HOME}/.TelegramDesktop
 blacklist ${HOME}/.VSCodium
 blacklist ${HOME}/.ViberPC
-blacklist ${HOME}/.VirtualBox
 blacklist ${HOME}/.WebStorm*
 blacklist ${HOME}/.Wolfram Research
 blacklist ${HOME}/.ZAP
@@ -349,7 +348,6 @@ blacklist ${HOME}/.config/Thunar
 blacklist ${HOME}/.config/Twitch
 blacklist ${HOME}/.config/Unknown Organization
 blacklist ${HOME}/.config/VSCodium
-blacklist ${HOME}/.config/VirtualBox
 blacklist ${HOME}/.config/Whalebird
 blacklist ${HOME}/.config/Wire
 blacklist ${HOME}/.config/Youtube
@@ -938,7 +936,6 @@ blacklist ${HOME}/.local/share/geeqie
 blacklist ${HOME}/.local/share/ghostwriter
 blacklist ${HOME}/.local/share/gitg
 blacklist ${HOME}/.local/share/gnome-2048
-blacklist ${HOME}/.local/share/gnome-boxes
 blacklist ${HOME}/.local/share/gnome-builder
 blacklist ${HOME}/.local/share/gnome-chess
 blacklist ${HOME}/.local/share/gnome-klotski