Expunging of proof: court may expunge or reduce creditor proofs on liquidator or creditor application. If the Liquidator believes a proof was improperly admitted or admitted by mistake, the Liquidator may apply to the Court, upon notice to the creditor, to expunge the proof or reduce its amount; if the Liquidator declines to act, any creditor or contributory may apply and the Court may make such orders as it thinks just.