Should I remove my silicone butt injections if I am not having any problems?

I am having to do more and more of these debulking procedures before patients can have a BBL. The type of removal depends on the type of substance, the amount of surface area involved, and the patient desires. The material is removed in the first stage.  It is rare that over 50% of the material can be removed.  Because the material is typically laden with bacteria means that you run the risk of injection and recurrence of granulomas.   A period of 3 months or so is observed.  Reconstructive surgery can be performed later to improve the appearance. To help allay fears and eliminate worries of patients who made the previous poor decision to have these substances injected, I recommend that they consult with a board certified PS who has experience in removing silicone.

There are risks associated with any treatments. Regardless of what method is chosen for removal most surgeons who perform this procedure would probably delay placing fat in the form of a BBL for reconstruction until your tissue has healed. This will minimize the risk of infection, improve graft take and allow for a better overall result.
It is unknown how many of these illegal procedures have been performed and what percentage of patients will have complications from this. There are patients who go their whole lives without experiencing negative effects and there are extreme cases of auto immune dysfunction as a result of such. Some surgeons advocate immediate removal if you have had such a procedure even without symptoms and some may suggest an approach where you are educated regarding what to look out for to know you are experiencing complications. Examination and a consultations will help you make a decision you are comfortable with.
It is possible to remove a large portion of involved tissue from your buttocks and to close the wound in one stage. A staged approach may decrease the risk of wound related complications and may allow removal of more of the involved tissue prior to closing the wound. 
I would not say there is only one way to perform these procedures and most surgeons will offer what they feel most comfortable with. Until there is published data comparing liposuction versus excision most of us would advise you based on experience.
The following is a very limited explanation of the options
Debulking procedures 
Single or staged procedure
Scar, asymmetry and need for possibly more than a single session of fat grafting to your buttocks to improve contour as well as revisions to improve scarring
Need for staged procedure if there is a large amount of affected tissue
May be only option is tissue is hard and scarred and there is injured skin
Risk of seromas and wound healing complications
Liposuction
Silicone collections may spread once the capsule around them ruptures
Silicone embolization if a blood vessel in the area of liposuction is injured and silicone travels into your blood stream
Might be possible if tissue is soft and silicone or substrate is in liquid form with less granulomatous tissue
Risk of seromas and wound healing complications