do I remove the moss on Brassavolo Nodosa

[floempie01]

I received a Brassavolo Nodosa from a local website. It seems to be a healthy plant, which has old flower stalks.

However, it also had 7-8 leaves that were brown and soft, and which looked like they were overwatered or kept too wet. It is potted, but I cannot see the medium because it is covered with moss. Should I remove this? it seems to hold too much water which has damage the rotten leaves.