remove "gated datasets unlock" logic
the new tokens are not related to a user and have read access to the gated datasets (right, @SBrandeis?).

also: add two tests to ensure the gated datasets can be accessed
remove "gated datasets unlock" logic: the new tokens are not related to a user and have read access to the gated datasets (right, @SBrandeis?).

also: add two tests to ensure the gated datasets can be accessed