If an answer is written in a language that deliberately prevents the programs written with it from doing the same output/calculations/etc. every time by introducing randomness, should it be deleted anyway?
No, it is not OK
If allowed, in an hypothetical probabilistic language that simply executes a random program without even looking at its source code, the empty program would be a solution to all code golf challenges.
On top of that we already reached consensus that all answers must work with probability 1, for every possible input.