how to remove this notification from user dashboard :
Premium membership and account limit

i beleive user should have the option to hide it.
and the option to control it from the back office.

for future searches
found it in plugins/osclass_pay/functions.php file
line : 697
just hashed it //

@ahmose
You can also add into your theme CSS:
#osp-limit-box {display:none!important;}