By Tom Verducci Neither MLB nor the MLBPA is operating with the idea of opening camps by the scheduled start date, Feb. 16. The on-time opening of spring training camps appeared no closer after a bargaining session Tuesday between baseball owners and players achieved little progress, according to sources familiar with the 90-minute session. No follow-up talks on core economic issues were scheduled. Instead, small groups are to meet Wednesday on non-core issues. Camps are scheduled to open Feb. 16. The pace and progress of talks would have to accelerate significantly to meet that goal. A week a…