dpkg-source: temporarily drop Package-List field generation

That way we can discuss it further until there's consensus on its design
and upload 1.16.0 immediately.

debian/changelog

@@ -92,9 +92,6 @@ dpkg (1.16.0) UNRELEASED; urgency=low
     spotting it.
   * Use the correct mtime when installing a file with statoverrides.
     LP: #739179
-  * Add new Package-List field to .dsc files as requested by ftpmasters.
-    It contains a list of packages that the source can build along with
-    their sections, priorities and architecture. Closes: #619131
   * Remove duplicate word in german translation of dpkg(1). Closes: #616096
   * Strip repeated non-significant spaces before and after newlines
     in Uploaders. Closes: #598922

scripts/dpkg-source.pl

@@ -291,6 +291,7 @@ if ($options{'opmode'} =~ /^(-b|--print-format|--(before|after)-build)$/) {
                                         $src_sect, $src_prio,
                                         join(',', @sourcearch));
     $fields->{'Package-List'} .= "\n" . join("\n", sort @pkglist);
+    delete $fields->{'Package-List'};
 
     # Scan fields of dpkg-parsechangelog
     foreach $_ (keys %{$changelog}) {