Is it true that milk contains calcium carbonate which removes calcium from our bones so we shouldn't drink it?
First of all, it doesn't contain calcium carbonate. Calcium carbonate is solid material that doesn't solve in water. Marble and limestone are calcium carbonate (https://en.wikipedia.org/wiki/Calcium_carbonate).
Even if it contained, it would be an excellent source of calcium. It is even used as dietary supplement. https://ods.od.nih.gov/factsheets/Calcium-HealthProfessional/
To answer the implied question (can you drink milk?), @Curt Fs's reference is perfect answer.
No, milk is a perfectly viable source of dietary calcium.