devhelp: Remove Python dependency

devhelp ships a single Python script which is a gedit plugin, nothing
else in devhelp I could see requires Python at runtime.

In fact, the entire lang/python module usage seems unneeded. Both
Python 3 (through meson) and Python 2 (through another BDEP in the chain)
are pulled in during the build anyway.

gedit itself has a direct Python 3 as RDEP, so in case someone usese the
plugin the dependency is always satisfied at runtime as well. I have
briefly tested the gedit plugin and it spawns devhelp on pressing F2 as
expected (In fact, gedit also an indirect Python 2 RDEP as well).

devhelp not having a Python RDEP lets me install the "xfce" meta package
without pulling in Python 2.

Feedback? OK?


Index: Makefile
===================================================================
RCS file: /cvs/ports/x11/gnome/devhelp/Makefile,v
retrieving revision 1.122
diff -u -p -r1.122 Makefile
--- Makefile 1 Nov 2019 19:39:56 -0000 1.122
+++ Makefile 30 Apr 2020 10:31:21 -0000
@@ -7,6 +7,7 @@ COMMENT= API documentation browser for

GNOME_PROJECT= devhelp
GNOME_VERSION= 3.34.0
+REVISION= 0

SHARED_LIBS += devhelp-3 1.0 # 4.0

@@ -20,7 +21,6 @@ WANTLIB += pango-1.0 webkit2gtk-4.0

MODULES= devel/dconf \
devel/meson \
- lang/python \
x11/gnome

MODGNOME_LDFLAGS= -L${X11BASE}/lib