packetbeat: remove after being marked broken for over two years

It was marked in commit 5aa4b19 by Linus Heckemann on 2019-10-07 (commited on 2019-10-08)

pkgs/misc/logging/beats/6.x.nix

@@ -41,20 +41,6 @@ in rec {
         elk = nixosTests.elk.ELK-6;
       };
   };
-  packetbeat6 = beat "packetbeat" {
-    buildInputs = [ libpcap ];
-    meta.broken = true;
-    meta.description = "Network packet analyzer that ships data to Elasticsearch";
-    meta.longDescription = ''
-      Packetbeat is an open source network packet analyzer that ships the
-      data to Elasticsearch.
-
-      Think of it like a distributed real-time Wireshark with a lot more
-      analytics features. The Packetbeat shippers sniff the traffic between
-      your application processes, parse on the fly protocols like HTTP, MySQL,
-      PostgreSQL, Redis or Thrift and correlate the messages into transactions.
-    '';
-  };
   journalbeat6  = beat "journalbeat" {
     meta.description = ''
       Journalbeat is an open source data collector to read and forward

pkgs/top-level/all-packages.nix

@@ -2294,7 +2294,6 @@ with pkgs;
     filebeat6
     heartbeat6
     metricbeat6
-    packetbeat6
     journalbeat6;
 
   inherit (callPackages ../misc/logging/beats/7.x.nix { })
@@ -2306,7 +2305,6 @@ with pkgs;
   filebeat = filebeat6;
   heartbeat = heartbeat6;
   metricbeat = metricbeat6;
-  packetbeat = packetbeat6;
   journalbeat = journalbeat6;
 
   bfr = callPackage ../tools/misc/bfr { };