This reverts commit 3b9a0186c4. Due to regressions found with using Tk 8.6.9.1, the python.org macOS installers for 3.6.8 and 3.7.2 are shipping with Tcl/Tk 8.6.8 as used in previous releases.
3b9a0186c4
(cherry picked from commit 7cf3d8e251) Co-authored-by: Ned Deily <nad@python.org>
7cf3d8e251