Deleting phone certificate, how?

Posted by hanugro
Hi all, Since I flash firmware with kulan I have few duplicate certificates. For example I have 2 Thawte CA, 2 Verisign Class3, 2 Verisign Class 3 CA. I have checked and they are identical. I want to delete one of them since there is no use to keep so many identical certificate. However my phone Delete option is greyed out. Anyone know how to force delete these certificate? Thanks!