fix secmod_rsa config; fix signkey stamp_end

src/config.ml

@@ -188,25 +188,8 @@ module Exchange_secmod_rsa = struct
 
   let lookahead_sign = get "lookahead_sign" |> duration
   let overlap_duration = get "overlap_duration" |> duration
-  let duration = get "duration" |> duration
   let key_dir = get "key_dir"
   let sm_priv_key = get "sm_priv_key"
-
-  (* only support one rsa_keysize *)
-  let rsa_keysize =
-    Coin.all_coins
-    |> List.map (fun coin -> coin.Coin.rsa_keysize)
-    |> List.sort_uniq Int.compare
-    |> function
-    | [] -> fail "no coin section found"
-    | a :: b :: _ ->
-        fail
-          "coins with different rsa_keysize are not supported, found \
-           rsa_keysize = %d and %d"
-          a b
-    | n :: [] -> n
-
-  let sections = Coin.all_coins |> List.map (fun coin -> coin.Coin.section_name)
 end
 
 module Exchange_secmod_eddsa = struct