TT#88050 Remove dependencies on obsolete packages

These packages got removed before the last LTS, so it is now safe to
remove dependencies on them.

Change-Id: I05beaea7e52861c4153b60c17d3cbb4cfce2f02b

debian/control

@@ -19,10 +19,6 @@ Depends:
  ${shlibs:Depends},
 Provides:
  asterisk-voicemail-storage,
-Conflicts:
- ngcp-asterisk,
-Replaces:
- ngcp-asterisk,
 Description: NGCP version ODBC voicemail storage support for the Asterisk PBX
  Asterisk is an Open Source PBX and telephony toolkit.
  .