Does the Svirfneblin Magic feat use spell slots

Does the Svirfneblin Magic feat use spell slots?

Feat is stated as follows:

You have inherited the innate spellcasting ability of your ancestors. This ability allows you to cast nondetection on yourself at will, without needing a material component. You can also cast each of the following spells once with this ability: blindness/deafness, blur, and disguise self. You regain the ability to cast these spells when you finish a long rest.

I think I understand ‘innate’ as meaning it doesn’t need to be in the spellbook/prepared because it’s a racial trait feat for Deep Gnomes, but not sure if that also means whether or they use a slot when cast.