build: Clean the .typelib file in clean rather than maintainer-clean
build: Clean the .typelib file in clean rather than maintainer-clean

It's built by `make` not the maintainer, so according to
http://www.gnu.org/software/hello/manual/automake/Clean.html it should be
cleaned by `make clean`.

Also remove it from BUILT_SOURCES, since it doesn't belong there.

renatofilho/folks2,GNOME/folks,pwithnall/folks,GNOME/folks,renatofilho/folks,renatofilho/folks,renatofilho/folks,renatofilho/folks,pwithnall/folks,renatofilho/folks2,renatofilho/folks2,pwithnall/folks,renatofilho/folks2,GNOME/folks