By Eric Branch The 49ers pared down their roster to 53 players before Saturday's 1 p.m. deadline and there was a theme to many of their notable cuts: age and cost. They released wide receiver Kassim Osgood, 34, ($955,000 base salary); guard Adam Snyder, 32, ($1 million), safety Bubba Ventrone, 31, ($855,000) and safety C.J. [...]