Both are wrong. You cannot use 'these' because that would imply plurality.Can I say: These information is unnecessary or would I rather say: These information are unnecessary.
English discriminates between discrete and continuous quantities. You could have less water, but fewer glasses. Quantities of water are continuous, you can have any amount. By contrast glasses are not, you can only have whole numbers of them. If you added water to a glass, you have more water. You dont have more waters because there is no such thing as 'a' water.
So returning to your topic of information, we can ask if there is any such thing as 'an' information. English regards information as a continuum. This means you would have less information and not fewer informations.