Remove compatibility code for FreeBSD < 11.2 from all ports.

Simplify some ports where DragonFlyBSD no longer needs to be special-cased.
Submitted by:	rene
Reviewed by:	bapt, jbeich
Differential Revision:	https://reviews.freebsd.org/D17724

lang/python35/Makefile

@@ -121,15 +121,6 @@ DISABLED_EXTENSIONS+=	nis
 PLIST_SUB+=	NO_NIS=""
 .endif
 
-post-patch:
-# readline shared library is present on base before FreeBSD 11 - r268461
-# force setup.py ignore base and use readline from ports
-.if ${OPSYS} == FreeBSD && ${OSVERSION} < 1100000
-	@${REINPLACE_CMD} -e \
-		"s|lib_dirs,\ \'readline\'|[\'${LOCALBASE}/lib\',\ \'.\'],\ \'readline\'|" \
-		${WRKSRC}/setup.py
-.endif
-
 post-install:
 .if ! ${PORT_OPTIONS:MDEBUG}
 	${RM} ${STAGEDIR}${PREFIX}/lib/libpython3.so						# Upstream Issue: https://bugs.python.org/issue17975