remove: non-existent tracker #486
Description
https://tracker2.ctix.cn:443/announce
https://tracker1.520.jp:443/announce
They actually jump to http://tracker.opentrackr.org:1337/announce .
> curl -I https://tracker2.ctix.cn:443/announce
HTTP/2 301
date: Wed, 15 Nov 2023 16:26:51 GMT
content-type: text/html
location: http://tracker.opentrackr.org:1337/announce
cf-cache-status: DYNAMIC
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=%2FfBfJyoCo8Pc91CS1ldrNxSmXoGmfbeKyjDfft%2F42vRXOGT3Xywx5V1AJwe8xZ%2BJOAWFRVmmrh0pZE5gv0eaCPp9jV1zEjIb9BgYC5ZSO%2BBhAejNplIYI0h9DSsEiluVZBJe"}],"group":"cf-nel","max_age":604800}
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server: cloudflare
cf-ray: 8268dbb85fe66420-SJC
alt-svc: h3=":443"; ma=86400
> curl -I https://tracker1.520.jp:443/announce
HTTP/2 301
date: Wed, 15 Nov 2023 16:27:17 GMT
content-type: text/html
location: http://tracker.opentrackr.org:1337/announce
cf-cache-status: DYNAMIC
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=BHOzqqKBupPEI%2FjeJB0MzeRMKRAgK0gDi8%2BRuEiJpZ60Ms%2BOKnlupQLGGlbSqTRno%2FFG88vxlUUrPoAJ337KJg7PabH0YZvyLvpfjrbOL%2FMNXFso5g3g63DOGls0ZMv0cu0%3D"}],"group":"cf-nel","max_age":604800}
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server: cloudflare
cf-ray: 8268dc55a9719645-SJC
alt-svc: h3=":443"; ma=86400