When patch 3.0.3 was released, players should have automatically unlearned talents that were no longer in the talent trees. Well, that process didn't completely work since some players were still receiving credit for talents that no longer exist in the trees, so Blizzard pushed a hotfix to correct the issue. Affected players will no longer receive credit for having these talents:

• Warlock: Improved Lash of Pain
• Warlock: Fel Stamina
• Shaman: Totemic Mastery
• Shaman: Improved Lightning Shield (Rank 3)
• Paladin: Precision
• Rogue: Fist Weapon Specialization
• Priest: Shadow Focus (Ranks 4 and 5)