Removed unused setters
Removed unused setters

These setters are not consumed by another.

mono/msbuild,jeffkl/msbuild,cdmihai/msbuild,sean-gilliam/msbuild,cdmihai/msbuild,rainersigwald/msbuild,jeffkl/msbuild,sean-gilliam/msbuild,cdmihai/msbuild,AndyGerlicher/msbuild,AndyGerlicher/msbuild,sean-gilliam/msbuild,jeffkl/msbuild,AndyGerlicher/msbuild,Microsoft/msbuild,mono/msbuild,chipitsine/msbuild,Microsoft/msbuild,rainersigwald/msbuild,Microsoft/msbuild,AndyGerlicher/msbuild,chipitsine/msbuild,chipitsine/msbuild,jeffkl/msbuild,cdmihai/msbuild,mono/msbuild,chipitsine/msbuild,Microsoft/msbuild,rainersigwald/msbuild,sean-gilliam/msbuild,mono/msbuild,rainersigwald/msbuild