The CBC responded that the cuts were made back in 2014:
"As is often the case with feature films adapted for television, Home Alone 2 was edited for time," Thompson said. "The scene with Donald Trump was one of several that were cut from the movie as none of them were integral to the plot. These edits were done in 2014, when we first acquired the film and before Mr. Trump was elected president."
Some people suspect the CBC is lying about the dates.
Did the scene get cut back in 2014?