It's not possible to remove own force_result comments, and they are carried over
Here is an example:
The soft-fail forcing was done erronously, and would be wanted to be removed. However, when trying to remove the comment Forbidden message is given to the person who made the comment (the person is also Administrator).
This ticket looks like opposite of ticket #107239, so I'm not sure what to do. However, in the recent months it feels there has been more related changes - now these un-deletable comments are also carried over automatically to new runs, and those carried over comments are also undeletable. If this kind of comment would happen in maintenance tests and couldn't be corrected (without availability of someone who has more direct rights than even Administrator has), it could mean even accidentally giving green light to an erronous update if the correction would be delayed.