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)
devel/google-cloud-cpp117: New port: C++ Idiomatic Clients for Google Cloud
Platform services (frozen at version 1.17.0 to support science/py-tensorflow)
PR: 257053