requirements: devel requirements removal

* NOTE Temporarily removes devel requirements due to current
  Invenio 3.0 developments. Remove when `invenio-oaiharvester` is
  3.0 compatible.

Reviewed-by: Samuele Kaplun <samuele.kaplun@cern.ch>
Signed-off-by: Jan Aage Lavik <jan.age.lavik@cern.ch>

requirements-devel.txt

@@ -28,8 +28,9 @@
 #     -e git+git://github.com/mitsuhiko/werkzeug.git#egg=Werkzeug
 #     -e git+git://github.com/mitsuhiko/jinja2.git#egg=Jinja2
 
--e git+git://github.com/inveniosoftware/invenio-base.git#egg=invenio-base
--e git+git://github.com/inveniosoftware/invenio-celery.git#egg=invenio-celery
--e git+git://github.com/inveniosoftware/invenio-ext.git#egg=invenio-ext
--e git+git://github.com/inveniosoftware/invenio-upgrader.git#egg=invenio-upgrader
--e git+git://github.com/inveniosoftware/invenio-utils.git#egg=invenio-utils
+# TODO: Temporarily removed due to Invenio 3.0 development
+# -e git+git://github.com/inveniosoftware/invenio-base.git#egg=invenio-base
+# -e git+git://github.com/inveniosoftware/invenio-celery.git#egg=invenio-celery
+# -e git+git://github.com/inveniosoftware/invenio-ext.git#egg=invenio-ext
+# -e git+git://github.com/inveniosoftware/invenio-upgrader.git#egg=invenio-upgrader
+# -e git+git://github.com/inveniosoftware/invenio-utils.git#egg=invenio-utils