remove REVERSE parameter from test.cmd

Co-authored-by: Andrew Murray <3112309+radarhere@users.noreply.github.com>

.ci/test.cmd

@@ -1,3 +1,3 @@
 python.exe -c "from PIL import Image"
 IF ERRORLEVEL 1 EXIT /B
-python.exe -bb -m pytest -v -x -W always --cov PIL --cov Tests --cov-report term --cov-report xml Tests %REVERSE%
+python.exe -bb -m pytest -v -x -W always --cov PIL --cov Tests --cov-report term --cov-report xml Tests