Update pve8-upgrade.sh

remove pveversion check

misc/pve8-upgrade.sh

@@ -179,13 +179,4 @@ if ! command -v pveversion >/dev/null 2>&1; then
   exit
 fi
 
-if [[ $(pveversion | grep -E "pve-manager/(7.4-13|7.4-14|7.4-15)") ]]; then
-  header_info
-  msg_error "This version of Proxmox Virtual Environment is not supported"
-  echo -e "  PVE Version 7.4-13 or higher is required."
-  echo -e "\nExiting..."
-  sleep 3
-  exit
-fi
-
 start_routines