Tried to clean Makefile.am files WRT CLEANFILES variable.
Tried to clean Makefile.am files WRT CLEANFILES variable.

inveniosoftware/invenio-formatter,inveniosoftware/invenio-formatter,tiborsimko/invenio-formatter,inveniosoftware/invenio-formatter,tiborsimko/invenio-formatter,tiborsimko/invenio-formatter