I wasn’t sure what you meant at first, but then realized you must be commenting on the name tagged on the linked object.
@Fabrice Régnier, the name you’ve tagged on that building looks like a person’s name. With no other tags representing this building as a business of some kind, I have to assume this is a private residence and that this is the name of the occupant. This is something we never do for privacy reasons (plus, it seems unlikely that this is actually the name of the house, which is what this tag is indicating).
Can you tell us more about what goal you were trying to reach by adding this name? We may be able to suggest a better way to accomplish that goal.
No, you can’t delete information from OSM database, you can only hide it, but the name will be still available through the object’s history. You should get in touch with firstname.lastname@example.org to have the name removed permanently from the database!