Remove unused THREADMODEL from MSVC appveyor build
diff --git a/build/appveyor/MSVC-appveyor-build.bat b/build/appveyor/MSVC-appveyor-build.bat
index 892daa1..3d2bbee 100644
--- a/build/appveyor/MSVC-appveyor-build.bat
+++ b/build/appveyor/MSVC-appveyor-build.bat
@@ -51,8 +51,7 @@
-DOPENSSL_USE_STATIC_LIBS=OFF ^
-DZLIB_LIBRARY="%WIN3P%\zlib-inst\lib\zlib%ZLIB_LIB_SUFFIX%.lib" ^
-DZLIB_ROOT="%WIN3P%\zlib-inst" ^
- -DWITH_PYTHON=%WITH_PYTHON% ^
- -DWITH_%THREADMODEL%THREADS=ON || EXIT /B
+ -DWITH_PYTHON=%WITH_PYTHON% || EXIT /B
@ECHO OFF
cmake --build . ^