Assistance please: Removing Hidden Categories edit

Hi anyone, how do I remove these hidden categories

Category:All articles containing potentially dated statements
Category:Articles containing potentially dated statements from June 2016
Category:Pages with incorrect ref formatting
Category:Pages with reference errors

now that the page has been fixed? Robertwhyteus (talk) 03:35, 28 July 2016 (UTC)Reply

The last two have gone. The first two are quite correct and hence should be there. Peter coxhead (talk) 07:46, 28 July 2016 (UTC)Reply