I would not recommend clipping. As reap said, bending is a very good way to move them from blocking light. The main reasons you want to leave them attached are: A - they can still photosynthesize to an extent if left partially attached and; B - if you damage them while bending them to the point where they die off, the plant can still use the nutrients stored in them for energy before and while they wilt and die. If you cut them off completely, you are wasting valuable stored energy in the leaves and additional potential energy creation while the leaves either recover from the bend or die off, not to mention creating an open wound in which infections, pests, etc can inhabit...