[t/spec] Remove +Mu == 0 test.
[t/spec] Remove +Mu == 0 test.

git-svn-id: 53605643c415f7495558be95614cf14171f1db78@30434 c213334d-75ef-0310-aa23-eaa082d1ae64

niner/roast,niner/roast,zostay/roast,b2gills/roast,skids/roast,cygx/roast,dankogai/roast,skids/roast,b2gills/roast,bitrauser/roast,cygx/roast,dankogai/roast,b2gills/roast,cygx/roast,dogbert17/roast,niner/roast,laben/roast,laben/roast,skids/roast,laben/roast,zostay/roast,bitrauser/roast,perl6/roast,dogbert17/roast,dankogai/roast,zostay/roast