sstables: remove unneeded new_sstable_component_file variant
sstables: remove unneeded new_sstable_component_file variant

can get rid of it because file_open_options is optional in
reactor::open_file_dma()

Signed-off-by: Raphael S. Carvalho <1e2942cea40e3b4d2162dfcd9e53e41c05a84d22@scylladb.com>

duarten/scylla,avikivity/scylla,avikivity/scylla,scylladb/scylla,scylladb/scylla,avikivity/scylla,duarten/scylla,scylladb/scylla,duarten/scylla,scylladb/scylla