[LyX/master] Previous DTL update is not usable. Roll it back.

[Richard Kimberly Heck]

commit 35727f9d77ece9439adcd6b597017161e220aef5
Author: Richard Kimberly Heck <rikiheck at lyx.org>
Date:   Sat Apr 4 19:25:11 2020 -0400

    Previous DTL update is not usable. Roll it back.
    
    Patch from Eugene.
---
 .../Win32/packaging/installer/ChangeLog.txt        |    1 -
 development/Win32/packaging/installer/Readme.txt   |    4 +++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/development/Win32/packaging/installer/ChangeLog.txt b/development/Win32/packaging/installer/ChangeLog.txt
index 5e3ac1d..367584d 100644
--- a/development/Win32/packaging/installer/ChangeLog.txt
+++ b/development/Win32/packaging/installer/ChangeLog.txt
@@ -7,7 +7,6 @@ Changelog for LyX-23x:
 - updated to ImageMagick 7.0.10-0 (portable)
 - updated to Ghostscript 9.50
 - updated to Python 2.7.17
-- updated to DTL 0.6.1
 - updated to Netpbm 10.27
 - updated to rsvg-convert 2.40.20
 - updated to unoconv 0.8.2
diff --git a/development/Win32/packaging/installer/Readme.txt b/development/Win32/packaging/installer/Readme.txt
index 47cd9ab..7f1d331 100644
--- a/development/Win32/packaging/installer/Readme.txt
+++ b/development/Win32/packaging/installer/Readme.txt
@@ -76,11 +76,13 @@ Updating dependencies
   to %%dependencies%%\bin.
 
 - DTL
-  Using TeX Live Manager install package dtl.win32, current version is 0.6.1.
+  Using TeX Live Manager install package dtl.win32,
   From C:\texlive\2019\bin\win32 copy these files
    dt2dv.exe
    dv2dt.exe
   to %%dependencies%%\bin. You can uninstall the package afterwards.
+  Info: Version 0.6.1 does not work with MikTex (math preview triggers error complaining about missing kpathsea631.dll),
+  therefore this method is not usable.
 
 - rsvg-convert
   dowload the 7zip archve from https://opensourcepack.blogspot.com/2012/06/rsvg-convert-svg-image-conversion-tool.html,