Could anyone tell me how to remove the 'flag thingy' from the posts I put on here please. 

I can't see a "Flag Thingy" on your post !! 

Gday...

I assume you mean this "flag thingy"

This only shows to you on a post you originated. No one else can see it. 

Cheers - John

If you have started a new topic, that "flag" is just a reminder it was initiated by you .. can you remove it ? .. I have no idea !

(sorry Rocky .. great minds hehe !)