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No no, Pokemon Bank is still in the eshop. They did however remove the video that was on there. Now it just has the "More Details" thing.
They also seem to have removed the stuff about the original date (which was in there until fairly recently, even after the delay) and the 30 day free trial thing, which mentioned the last day you could get the trial was the 31st.
However, the official Bank website still mentions that if you download the app before the 31st, you can still get 30 days from that point.
For the first time, it also mentions that you have to download AND open the game in order to obtain the trial before Feb. 1st.
From what it looks like to me, they want the game up on the eshop before the 31st as its the only date they've left on a lot of sources after the delay.