3.4.Automatic removal of long-term suspended entities ASX’s policy is to remove from the official list any entity whose securities have been suspended from trading for a continuous period of 3 years.
"The removal will usually take effect from the open of trading on the first trading day after the expiration of that 3 year period
https://www.asx.com.au/documents/rules/gn33_removal_of_entities.pdf"