Drop redundant adduser dependency

The adduser dependency is already pulled in by blends-common,
which handles system user/group creation for Debian Blends.
The explicit dependency in junior-config is redundant, as none
of its binaries are used here.

config/control

@@ -1,6 +1,6 @@
 Package: junior-config
 Architecture: all
-Depends: adduser, ${misc:Depends}, menu, blends-common (>= 0.6.15)
+Depends: ${misc:Depends}, menu, blends-common (>= 0.6.15)
 Description: Debian Jr. Project common package
  This package builds the basic infrastructure of all junior-* packages.
  .

debian/control

@@ -24,7 +24,7 @@ Description: Debian Jr. tasks for tasksel
 
 Package: junior-config
 Architecture: all
-Depends: adduser, ${misc:Depends}, menu, blends-common (>= 0.6.15)
+Depends: ${misc:Depends}, menu, blends-common (>= 0.6.15)
 Description: Debian Jr. Project common package
  This package builds the basic infrastructure of all junior-* packages.
  .