Removing skin from under the breast will not do anything to help your problem, which is that the left implant has dropped too far after the capsulectomy. What you need is a tightening procedure of the new inner capsule that would lift the implant back up. This can be done with sutures alone or with a piece of silk mesh called SERI. It is usually very successful.
Strattice with capsulectomy for implant support
With a capsulectomy, the supporting envelope - the scar capsule - is removed, so there is the potential for the implant to sag. Strattice can replace the support, add coverage for less rippling, and is also very effective in my experience at preventing recurrence of capsular contracture. If there are no signs of the contracture coming back, another option would be SERI Scaffold mesh for an internal bra.