Removes unused variables and adds IronPython.Mono.sln that doesn't include WPF project.
Removes unused variables and adds IronPython.Mono.sln that doesn't include WPF project.

IronLanguages/ironpython2,IronLanguages/ironpython2,IronLanguages/ironpython2,IronLanguages/ironpython2,IronLanguages/ironpython2,slozier/ironpython2,slozier/ironpython2,slozier/ironpython2,slozier/ironpython2,IronLanguages/ironpython2,slozier/ironpython2,slozier/ironpython2,slozier/ironpython2,IronLanguages/ironpython2