public void clearAspectRatio() {
    mCropOverlayView.setAspectRatioX(1);
    mCropOverlayView.setAspectRatioY(1);
    setFixedAspectRatio(false);
  }
Clears set aspect ratio values and sets fixed aspect ratio to FALSE.
core/src/main/java/com/theartofdev/edmodo/cropper/CropImageView.java