Possible Clues:

• Lacking a cryptic clue? It's not important
• Minute required — or two thirds of a minute — solving clues
• 15 13 -- stupid clue
• Beyond teeny-tiny
• Less complicated clue in lower case
• Extremely small
• Wee! - rubbish clue
• Obstinate type describes elected American congressman originally as very unimportant
• Without signal around lake that's very small
• Little negative thing, awful clue