Revert previous checkin; Tcl/Tk seems to build fine.
diff --git a/Tools/buildbot/external.bat b/Tools/buildbot/external.bat
index 86ce5b7..ae18ead 100644
--- a/Tools/buildbot/external.bat
+++ b/Tools/buildbot/external.bat
@@ -25,9 +25,6 @@
 )

 

 @rem tcltk

-rd /s/q tcltk

-rd /s/q tcl8.4.16

-rd /s/q tk8.4.16

 if not exist tcl8.4.16 (

    if exist tcltk rd /s/q tcltk

    if exist tcl8.4.12 rd /s/q tcl8.4.12