Bike Hydraulic Brakes constantly pressing against the rotor
There are a number of things this could be.  Your rotors could be bent, your wheels could be improperly placed in the dropouts, your pads could be failing to contract, your brake calipers could be improperly adjusted, or your pad engagement point adjustment knobs could be failed or improperly adjusted.  

It's likely not a bleed issue (brakes that need to be bled are generally "soft) unless someone injected enough fluid in your brakes to make them permanently partially contracted.

Your best bet is probably a trip to your LBS to get it sorted out.  You could also try the assembly steps here (for your brakes) or find a resource that explains how to adjust hydraulic disc brakes.