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.

schema/init/idz.sql

@@ -12,7 +12,6 @@ create table "idz"."profile" (
             references "aime"."player"("id")
             on delete cascade,
     -- TODO shop_id
-    "ext_id" integer not null,
     "name" text not null,
     "lv" smallint not null,
     "exp" integer not null,
@@ -21,8 +20,7 @@ create table "idz"."profile" (
     "mileage" integer not null,
     "register_time" timestamp not null,
     "access_time" timestamp not null,
-    constraint "profile_player_uq" unique ("player_id"),
-    constraint "profile_ext_id_uq" unique ("ext_id")
+    constraint "profile_player_uq" unique ("player_id")
 );
 
 create table "idz"."chara" (

schema/init/meta.sql

@@ -1,2 +1,2 @@
 create table "meta" ("schemaver" integer not null);
-insert into "meta" values (1);
+insert into "meta" values (2);

schema/migrate/M0002-idz-drop-profile-ext-id.sql

@@ -0,0 +1,3 @@
+alter table "idz"."profile" drop column "ext_id";
+
+update "meta" set "schemaver" = 1;