Merge bitcoin/bitcoin#23594: build: don't set PORT=no in config.site

05cdceb19d build: don't set PORT=no in config.site (fanquake)

Pull request description:

  This should have been a part of dropping macports support in #15175.

ACKs for top commit:
  hebasto:
    ACK 05cdceb19d, I have reviewed the code and it looks OK, I agree it can be merged.

Tree-SHA512: 278b2f308e55aad5524530e654ac08462714676b71e01d31e5f152f69e02f916afc553510ac8352ed0bb0184f7fdb2ee7038ab5ac2de6923f366829859e0b6ee

depends/config.site.in

@@ -72,7 +72,6 @@ fi
 
 if test "@host_os@" = darwin; then
   BREW=no
-  PORT=no
 fi
 
 PATH="${depends_prefix}/native/bin:${PATH}"