Luther removed nothing from the NT. His first edition translation included ALL of accepted NT canon. His questions about canon were not unusual for the time - some years passed before the Catholic Church made a definite and binding answer (for Catholics) on canon.
The problem with Purgatory, etc is that they are not taught in either Old or New, and multiple passages in both contradict the idea. Since Purgatory is an idea as significant as Hell, the absence is deafening.
That, and most Lutheran Bibles around the world have the other books in them.
They did in the US also, until Wilson made them be removed during WWI.