idz: Remove profile ext id

Turns out (while researching team creation) the profile ext id
is just the aime id. After creating a team a profile discovery
request is immediately issued with the "profile id" in the field
that holds the aime id during initial profile load.

src/idz/decoder/saveProfile2.ts

@@ -2,9 +2,9 @@ import { car } from "./_car";
 import { mission } from "./_mission";
 import { RequestCode } from "./_defs";
 import { BackgroundCode, CourseNo, ExtId, TitleCode } from "../model/base";
-import { Profile } from "../model/profile";
 import { SaveProfileRequest2 } from "../request/saveProfile";
 import { bitmap } from "./_bitmap";
+import { AimeId } from "../../model";
 
 saveProfile2.msgCode = 0x0068 as RequestCode;
 saveProfile2.msgLen = 0x0940;
@@ -47,7 +47,7 @@ export function saveProfile2(buf: Buffer): SaveProfileRequest2 {
   return {
     type: "save_profile_req",
     format: 2,
-    profileId: buf.readUInt32LE(0x0004) as ExtId<Profile>,
+    aimeId: buf.readUInt32LE(0x0004) as AimeId,
     lv: buf.readUInt16LE(0x0026),
     exp: buf.readUInt32LE(0x0028),
     fame: buf.readUInt32LE(0x0468),