I'm sure Phil's method will work fine, but for the sake of completeness, and to give you an alternative, here is how I do it. I do it in a text editor, or a cr2 editor. First step is to **save the figure with IK turned off**, this is important, because otherwise the parenting will be wrong. Open the cr2 in a text editor, or cr2 editor. The IK stuff is in the 'figure' section of the cr2, search for the string "inkyChain", this will be at the start of every IK code block. Delete all the IK code blocks. The image above shows what what the IK code blocks for V4 look like in CR2Builder, below is what they look like in a text editor:

        inkyChain     LeftLeg  
                {
                off
                name LeftLeg
                addLink lThigh:1
                addLink lShin:1
                goal lFoot:1
                linkWeight 0 1
                linkWeight 1 0.2
                }
        inkyChain     RightLeg  
                {
                off
                name RightLeg
                addLink rThigh:1
                addLink rShin:1
                goal rFoot:1
                linkWeight 0 1
                linkWeight 1 0.2
                }
        inkyChain     LeftArm  
                {
                off
                name LeftArm
                addLink lCollar:1
                addLink lShldr:1
                addLink lForeArm:1
                goal lHand:1
                linkWeight 0 0.2
                linkWeight 1 0.04
                linkWeight 2 0.008
                }
        inkyChain     RightArm  
                {
                off
                name RightArm
                addLink rCollar:1
                addLink rShldr:1
                addLink rForeArm:1
                goal rHand:1
                linkWeight 0 0.2
                linkWeight 1 0.04
                linkWeight 2 0.008
                }

There are also two lines relating to the IK chains in the goal actors (hands and feet), these lines are: inkyParent * nonInkyParent *

Where "*" is the name of an actor, it will do no harm to leave these lines in, as IK was completely disabled by deleting the stuff from the 'figure' section, but if you want to do a really thorough clean up, you can delete these lines also. P.S. DarkEdge already said it, but as I had already written this before I saw his post, I might as well post it.