We once used dsa_create to create DSA and it ’s all replaced by dsa_create_in_place since commit 31ae1638ce. dsa_attach and dsa_get_handle cooperate with dsa_create. dsa_trim and dsa_dump are introduced by DSA original commit 13df76a537 , but not used since then.
So, they are all dead codes, provide a patch to remove them.
