STYLE: Consistently use MODULE_NAME var in Markups CMakeLists.txt

git-svn-id: http://svn.slicer.org/Slicer4/trunk@22352 3bd1e089-480b-0410-8dfb-8563597acbee
COMP: Simplify Markups module generic tests configuration

Simply passing option "WITH_GENERIC_TESTS" to the macro
"slicerMacroBuildLoadableModule" is enough.

git-svn-id: http://svn.slicer.org/Slicer4/trunk@22353 3bd1e089-480b-0410-8dfb-8563597acbee