Remove a license from ALM v11.5+, v12.x+:

http://eyeontesting.com/questions/5511/how-to-remove-a-license-from-qcalm-v115x.html

Remove UFT v12.5x+ seat licenses:

http://eyeontesting.com/questions/16790/how-do-i-remove-a-uft-v125x-seat-license-from-my-m.html

Remove UFT v12.5x+ concurrent licenses (AutoPass):

http://eyeontesting.com/questions/16779/how-to-remove-a-uft-v125x-license-from-autopass.html

Remove a license from LR v11.0 and below:

http://eyeontesting.com/questions/1109/how-to-remove-a-loadrunner-license-key-without-rei.html

Remove a license from LR v11.5x+, v12.x+:

http://eyeontesting.com/questions/16785/how-do-i-remove-a-loadrunner-v115x-v12x-license-fr.html