Remove WWW entries moved into port Makefiles
Commit b7f05445c00f has added WWW entries to port Makefiles based on
WWW: lines in pkg-descr files.
This commit removes the WWW: lines of moved-over URLs from these
pkg-descr files.
Approved by: portmgr (tcberner)
Add libpqxx. libpqxx is no longer hosted under the main PostgreSQL tree and
is now a project on gborg. libpqxx is still a supported interface.
PR: ports/45944
Submitted by: Palle Girgensohn <girgen@pingpong.net>