remove size check in analyze color
remove size check in analyze color

_pseudocolored_image is used within the analyze_color function in which it is fed an RGB image. The if statement checking the type of image within the _pseudocolored_image function is not needed since there is a fatal error in the analyze_color function if the image is grayscale.

stiphyMT/plantcv,stiphyMT/plantcv,danforthcenter/plantcv,danforthcenter/plantcv,stiphyMT/plantcv,danforthcenter/plantcv