Remove duplicated CentOS 7 mirrorlist update logic (#1586)

* Bump version from 2.5.6 to 2.5.7

* Remove duplicated CentOS 7 mirrorlist update logic

Remove duplicated CentOS 7 mirrorlist handling introduced in this commit 52c79b4

Author: 7006

src/common-utils/devcontainer-feature.json

@@ -1,6 +1,6 @@
 {
     "id": "common-utils",
-    "version": "2.5.6",
+    "version": "2.5.7",
     "name": "Common Utilities",
     "documentationURL": "https://github.com/devcontainers/features/tree/main/src/common-utils",
     "description": "Installs a set of common command line utilities, Oh My Zsh!, and sets up a non-root user.",

src/common-utils/main.sh

@@ -378,14 +378,6 @@ if [ "${ADJUSTED_ID}" = "rhel" ] && [ "${VERSION_CODENAME-}" = "centos7" ]; then
     sed -i s/^mirrorlist=http/#mirrorlist=http/g /etc/yum.repos.d/*.repo
 fi
 
-if [ "${ADJUSTED_ID}" = "rhel" ] && [ "${VERSION_CODENAME-}" = "centos7" ]; then
-    # As of 1 July 2024, mirrorlist.centos.org no longer exists.
-    # Update the repo files to reference vault.centos.org.
-    sed -i s/mirror.centos.org/vault.centos.org/g /etc/yum.repos.d/*.repo
-    sed -i s/^#.*baseurl=http/baseurl=http/g /etc/yum.repos.d/*.repo
-    sed -i s/^mirrorlist=http/#mirrorlist=http/g /etc/yum.repos.d/*.repo
-fi
-
 # Install packages for appropriate OS
 case "${ADJUSTED_ID}" in
     "debian")