To convert a property with backing field to auto-property
  1. Position the caret at the name of a property, or select it in File Structure:
    Convert Property to Auto-Property refactoring
    Image 1:
  2. Choose ReSharper | Refactor | Convert | Property to Auto Property.
  3. The refactoring will be carried out without requiring you to specify any further options:
    Convert Property to Auto-Property refactoring
    Image 2: