Refine gameday bootstrap layout

backend/app/schemas.py

@@ -126,21 +126,7 @@ class AudioClipReorder(BaseModel):
     clip_ids: list[int] = Field(min_length=1)
 
 
-class PlaybackSessionCreate(BaseModel):
-    external_team_id: str
-
-
 class PlaybackAction(BaseModel):
     assignment_id: int | None = None
     clip_id: int | None = None
     external_player_id: str | None = None
-    state: str = "playing"
-
-
-class PlaybackSessionResponse(BaseModel):
-    id: int
-    external_team_id: str
-    external_game_id: str
-    current_assignment_id: int | None
-    state: str
-    last_triggered_at: datetime | None