print/py-fonttools3: Remove obsoleted port

Use print/py-fonttools instead.

print/py-fonttools3: Cosmetic change

Fix CONFLICTS entries of multiple ports

There have been lots of missing CONFLICTS_INSTALL entries, either
because conflicting ports were added without updating existing ports,
due to name changes of generated packages, due to mis-understanding
the format and semantics of the conflicts entries, or just due to
typoes in package names.

This patch is the result of a comparison of all files contained in
the official packages with each other. This comparison was based on
packages built with default options and may therefore have missed
further conflicts with optionally installed files.

Where possible, version numbers in conflicts entries have been
generalized, some times taking advantage of the fact that a port

print/py-fonttools3: Cosmetic change

*: fix tab vs. space issues, and comments according to the guide.

Mk: switch PYTHON_REL to 5 digits to support python 3.10.x

PR:		255013
Differential Revision:	https://reviews.freebsd.org/D29418
Exp-run by:	antoine
Approved by:	wen@, no objection from python@ or portmgr@

math/py-matplotlib: chase minimum Python version in dependent ports

Since the previous update changed USES=python from 3.6+ to 3.7+, all
dependent ports must have USES=python:3.7+ as well, otherwise it breaks
the @py36 flavor.

PR:		255347
Reported by:	sunpoet

Remove # $FreeBSD$ from Makefiles.

Remove empty PY_TYPING from ports using Python 3.6+

Leave out textproc/py-sphinx[18] for now.

Remove empty PY_ENUM34 from ports using Python 3.6+

Remove some more expired ports:

devel/py-backports.functools_lru_cache
devel/py-backports_abc
devel/py-futures
devel/py-singledispatch
devel/py-typing
graphics/py-pillow6

Adjust dependent ports.
Tested with 'make index' against r559975

Drop python 2.7 support from a few ports

With hat:	portmgr

Add comment for PORTSCOUT

Add py-fonttools3 3.44.0 (copied from py-fonttools)

- Add PORTSCOUT