Revert "sap: Rename to "Network Streams (SAP)""

This reverts commit a1ab6ede.
This is not anymore needed with the probe rework.

modules/services_discovery/sap.c

@@ -124,7 +124,7 @@ VLC_SD_PROBE_HELPER("sap", N_("SAP Announcements"))
 
 vlc_module_begin ()
     set_shortname( N_("SAP"))
-    set_description( N_("Network Streams") )
+    set_description( N_("SAP Announcements") )
     set_category( CAT_PLAYLIST )
     set_subcategory( SUBCAT_PLAYLIST_SD )