Hi @MyHomeQoute,
Thank you for reaching out to Microsoft Q&A forum!
To delete photos from Data Labeling in Vision Studio, you should create a new version of the dataset that excludes the photos you want to remove.
The error message "testroof3 error, Images with too many annotation" indicates that some of the images in your dataset have too many annotations. To resolve this error, you should review the images in your dataset and remove any unnecessary annotations. You can also consider splitting the images into smaller subsets with fewer annotations.
I hope you understand. Thank you.