OpenPKG Specs / changelog

It seems opensips.schema-dbtext.txt was introduced but never used, so remove it.

• Tue, 28 Aug 2012 18:36:50 +0200
• by Michael Schloh von Bennewitz <michael@schloh.com> [Tue, 28 Aug 2012 18:36:50 +0200] rev 581
• It seems opensips.schema-dbtext.txt was introduced but never used, so remove it.