old_contents: # -*- coding: utf-8 -*-
  """
  fudcon.modules.speakers.models
  ~~~~~~~~~~~~~~~~~~~~~
  
  Speakers models
  """
  
  from fudcon.database import db
  
  
  class Speaker(db.Model):
      """
      Model for listing all the attributes of
      the speakers
      """
      __tablename__ = 'speakers'
  
      id = db.Column(db.Integer, primary_key=True)
      names = db.Column(db.String(255))
      fas = db.Column(db.String(255))
      bio = db.Column(db.Text())
      sessions = db.relationship('Session', backref='speakers',
                                 lazy='dynamic')
      photo = db.Column(db.String(255))
      active = db.Column(db.Boolean())
  
new_contents: # -*- coding: utf-8 -*-
  """
  fudcon.modules.speakers.models
  ~~~~~~~~~~~~~~~~~~~~~
  
  Speakers models
  """
  
  from fudcon.database import db
  
  
  class Speaker(db.Model):
      """
      Model for listing all the attributes of
      the speakers
      """
      __tablename__ = 'speakers'
  
      id = db.Column(db.Integer, primary_key=True)
      names = db.Column(db.String(255))
      fas = db.Column(db.String(255))
      bio = db.Column(db.Text())
      active = db.Column(db.Boolean())
  
subject: Remove columns from speakers models