I have been selling homes for 31 years. I usually represent sellers. When I take a home off the market it means that the seller no longer wants to show it.
If the listing was up it would be an expired.
If it was in escrow or a pending sale it would be pending or taking back up offers.
My guess is the sellers goals have changed but it is still listed. In this market it could mean so many things. I have taken homes off the market because the home did not sell for what the seller needed to pay off the existing mortgages and the seller has decided to rent out or, the seller has decided to give to the bank.
So many reasons. The listing agent may tell you is you ask.