old_contents: """
  
      migro.settings
      ~~~~~~~~~~~~~~
  
      Utility settings.
  
  """
  # Upload base url.
  UPLOAD_BASE = 'https://upload.uploadcare.com/'
  
  # Project public key.
  PUBLIC_KEY = '9a598e2a47fe961ea412'
  
  FROM_URL_TIMEOUT = 10
  
  # Maximum number of concurrent upload requests
  # Since we use `from_url` feature this will be just GET requests.
  MAX_CONCURRENT_UPLOADS = 1
  
  # Maximum number of concurrent jobs to wait of status update of uploaded file.
  MAX_CONCURRENT_CHECKS = 20
  
  # Time to wait before next status check, seconds.
  STATUS_CHECK_INTERVAL = 3
  
new_contents: """
  
      migro.settings
      ~~~~~~~~~~~~~~
  
      Utility settings.
  
  """
  # Upload base url.
  UPLOAD_BASE = 'https://upload.uploadcare.com/'
  
  # Project public key.
  PUBLIC_KEY = None
  
  FROM_URL_TIMEOUT = 10
  
  # Maximum number of concurrent upload requests
  # Since we use `from_url` feature this will be just GET requests.
  MAX_CONCURRENT_UPLOADS = 20
  
  # Maximum number of concurrent jobs to wait of status update of uploaded file.
  MAX_CONCURRENT_CHECKS = 20
  
  # Time to wait before next status check, seconds.
  STATUS_CHECK_INTERVAL = 3
  
subject: Remove `public_key` value from settings