devel/py-debugpy: Revert e998a15c

1.6.8 tag has been removed.

Reported by:	Mike Harding <mvharding@gmail.com>

devel/py-debugpy/Makefile

 PORTNAME=	debugpy
-PORTVERSION=	1.6.8
+PORTVERSION=	1.6.7
+PORTREVISION=	1
 CATEGORIES=	devel python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}

devel/py-debugpy/distinfo

-TIMESTAMP = 1691070038
-SHA256 (debugpy-1.6.8.zip) = 3b7091d908dec70022b8966c32b1e9eaf183ff05291edf1d147fee153f4cb9f8
-SIZE (debugpy-1.6.8.zip) = 4634053
+TIMESTAMP = 1681052924
+SHA256 (debugpy-1.6.7.zip) = c4c2f0810fa25323abfdfa36cbbbb24e5c3b1a42cb762782de64439c575d67f2
+SIZE (debugpy-1.6.7.zip) = 4660701