Remove all tags of CentOS (now fully EOL)

https://www.redhat.com/en/topics/linux/centos-linux-eol

library/centos

@@ -1,16 +1,3 @@
 Maintainers: The CentOS Project <[email protected]> (@CentOS)
 GitRepo: https://github.com/CentOS/sig-cloud-instance-images.git
 Directory: docker
-
-Tags: centos7, 7, centos7.9.2009, 7.9.2009
-GitFetch: refs/heads/CentOS-7-x86_64
-GitCommit: b2d195220e1c5b181427c3172829c23ab9cd27eb
-arm32v7-GitFetch: refs/heads/CentOS-7armhfp
-arm32v7-GitCommit: 8022ae6d18ddf031b1b3a80549eeb46d1deb6dcd
-arm64v8-GitFetch: refs/heads/CentOS-7-aarch64
-arm64v8-GitCommit: 02ea5808a8a155bad28677dd5857c8d382027e14
-ppc64le-GitFetch: refs/heads/CentOS-7-ppc64le
-ppc64le-GitCommit: a8e4f3da8300d18da4c0e5256d64763965e66810
-i386-GitFetch: refs/heads/CentOS-7-i386
-i386-GitCommit: 206003c215684a869a686cf9ea5f9697e577c546
-Architectures: amd64, arm64v8, arm32v7, ppc64le, i386