Remove a few 'setenv's from the definition.

diff -Naur bsd-games-2.17/config.params bsd-games-patch/config.params
--- bsd-games-2.17/config.params	1970-01-01 07:00:00.000000000 +0700
+++ bsd-games-patch/config.params	2020-04-22 20:49:40.809695248 +0700
@@ -0,0 +1,11 @@
+bsd_games_cfg_do_chown=n
+bsd_games_cfg_non_interactive=y
+# The offensive fortunes shown only if requested by user.
+bsd_games_cfg_offensive_fortunes=y
+# Fix some man-pages: cfscores, morse, ppt, rot13, snscore, teachgammon.
+bsd_games_cfg_use_dot_so=syml
+# Don't build dm, countmail, and wargames.
+# Wargames isn't convenient as a game launcher.
+# dm is a toy to restrict access to bsd-games.
+# countmail require some BSD-package called `from`.
+bsd_games_cfg_no_build_dirs="wargames dm countmail"