Tiling2: Remove client from floating window list when cleaning.
Tiling2: Remove client from floating window list when cleaning.

FlorentRevest/Enlightenment,tasn/enlightenment,FlorentRevest/Enlightenment,tizenorg/platform.upstream.enlightenment,rvandegrift/e,tizenorg/platform.upstream.enlightenment,tizenorg/platform.upstream.enlightenment,tasn/enlightenment,rvandegrift/e,FlorentRevest/Enlightenment,rvandegrift/e,tasn/enlightenment