gitignore: remove trailing blank, actually ignores .project
gitignore: remove trailing blank, actually ignores .project

Signed-off-by: Olivier Lamy <d3548cf353cfa8a03c6f2a815e39e2c0a78449a5@apache.org>

sadlil/archiva,sadlil/archiva,sadlil/archiva,apache/archiva,apache/archiva,emsouza/archiva,apache/archiva,apache/archiva,apache/archiva,emsouza/archiva,olamy/archiva,emsouza/archiva,olamy/archiva,emsouza/archiva,olamy/archiva,sadlil/archiva,sadlil/archiva,olamy/archiva