yap, yap-devel: use only MacPorts ncurses

[ryandesign (Ryan Carsten Schmidt)]

yap links with both MacPorts ncurses and the system's ncurses:

$ otool -L /opt/local/bin/yap
/opt/local/bin/yap:
	/opt/local/lib/libYap.dylib (compatibility version 0.0.0, current version 0.0.0)
	/opt/local/lib/libgmp.10.dylib (compatibility version 11.0.0, current version 11.1.0)
	/opt/local/lib/libreadline.6.1.dylib (compatibility version 6.0.0, current version 6.1.0)
	/opt/local/lib/libncurses.5.dylib (compatibility version 5.0.0, current version 5.0.0)
	/usr/lib/libncurses.5.4.dylib (compatibility version 5.4.0, current version 5.4.0)
	/usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 7.9.0)
	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.2.0)

The former probably comes from readline.

It should only link with MacPorts ncurses.

[mf2k (Frank Schima)]

See #58428.