Remove unnecessary blank lines in model files for cleaner code structure

app/models/playlist.py

@@ -20,7 +20,6 @@ class Playlist(BaseModel, table=True):
     is_current: bool = Field(default=False, nullable=False)
     is_deletable: bool = Field(default=True, nullable=False)
 
-
     # relationships
     user: "User" = Relationship(back_populates="playlists")
     playlist_sounds: list["PlaylistSound"] = Relationship(back_populates="playlist")

app/models/sound.py

@@ -28,7 +28,6 @@ class Sound(BaseModel, table=True):
     is_music: bool = Field(default=False, nullable=False)
     is_deletable: bool = Field(default=True, nullable=False)
 
-
     # relationships
     playlist_sounds: list["PlaylistSound"] = Relationship(back_populates="sound")
     streams: list["Stream"] = Relationship(back_populates="sound")

app/models/sound_played.py

@@ -17,7 +17,6 @@ class SoundPlayed(BaseModel, table=True):
     user_id: int = Field(foreign_key="user.id", nullable=False)
     sound_id: int = Field(foreign_key="sound.id", nullable=False)
 
-
     # constraints
     __table_args__ = (
         UniqueConstraint(

app/models/stream.py

@@ -25,7 +25,6 @@ class Stream(BaseModel, table=True):
     status: str = Field(nullable=False, default="pending")
     error: str | None = Field(default=None)
 
-
     # constraints
     __table_args__ = (
         UniqueConstraint(

app/models/user.py

@@ -25,7 +25,6 @@ class User(BaseModel, table=True):
     api_token: str | None = Field(unique=True, default=None)
     api_token_expires_at: datetime | None = Field(default=None)
 
-
     # relationships
     oauths: list["UserOauth"] = Relationship(back_populates="user")
     plan: "Plan" = Relationship(back_populates="users")

app/models/user_oauth.py

@@ -20,7 +20,6 @@ class UserOauth(BaseModel, table=True):
     name: str = Field(nullable=False)
     picture: str | None = Field(default=None)
 
-
     # constraints
     __table_args__ = (
         UniqueConstraint(