You can restore the deleted project as per this project restore process, then delete the bucket using the gcloud command:
gcloud projects undelete PROJECT_ID
gsutil rm -r gs://BUCKET_NAME
Once you delete the bucket from the project you can reuse the name for new bucket on another project.
Please note that, Project owners can restore a deleted project within the 30-day recovery period; however, Cloud Storage resources are deleted before the 30-day period ends.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…