"not yet removed" is a perfectly correct phrase that can be used in written English.
You can use it to refer to something that has not been taken away yet. For example, "The old wallpaper is still here, not yet removed."
Sen. Ted Cruz (R-Tex). had not yet removed his overcoat.
From the air, they spotted a dead elephant lightly covered with brush, its tusks not yet removed.
Joy had not — or not yet — removed Lizzie, but Clark, who had formerly made the mare his pet, refused to have anything more to do with her.
But wealth has not yet removed a brooding sense of national failure.Feeding their sense of failure is the Arabs' bitter, losing contest with Israel.
The advices received by Captain O'Brien from Colt Humphrevs at Lisbon, show that the temporary obstacles to a fulfilment of the stipulations on the part of the United States with the Dey and Regency of Algiers are not yet removed.
Major U.S. industries and agricultural interests are also unhappy that the president has not yet removed tariffs on steel and aluminum imports from Mexico and Canada, as administration officials promised.
He was worrying about being pigeon-holed at an age when most of us hadn't yet removed our training wheels.
Scientific research is a financial overhead that has not yet been removed.
A few weeks later, you realize, guiltily, that the fourth CD has not yet been removed from the box, and that it never will be.
Part of the plaza remained cordoned off hours after the early-morning shooting while the police investigated, and the body had not yet been removed.
Even when he had one foot out the door, his sense of humor was evident in the signs that had not yet been removed from his office.
