TT#53673 Update Debian package description

ngcp-csc is gone since mr5.5

Change-Id: I0aac0d7b393ba344a0d8ee714da0a4d9344c9165

debian/control

@@ -14,4 +14,5 @@ Depends:
  ${misc:Depends},
  ${shlibs:Depends},
 Description: Customer Self-Care Web UI
- New customer Self-Care Web UI as a replacement of deprecated ngcp-csc
+ Customer Self-Care Web UI for endusers to configure their accounts
+ on the Sipwise NGCP. Replacement of deprecated ngcp-csc.