Remove Unifi Network Server scripts (dead APT repo) (#12500)

* Initial plan

* remove Unifi (not unifi-os-server) CT, install, JSON, and header files

Co-authored-by: MickLesk <47820557+MickLesk@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: MickLesk <47820557+MickLesk@users.noreply.github.com>

install/unifi-install.sh

@@ -1,53 +0,0 @@
-#!/usr/bin/env bash
-
-# Copyright (c) 2021-2026 tteck
-# Author: tteck (tteckster)
-# License: MIT | https://github.com/community-scripts/ProxmoxVE/raw/main/LICENSE
-# Source: https://ui.com/download/unifi
-
-source /dev/stdin <<<"$FUNCTIONS_FILE_PATH"
-color
-verb_ip6
-catch_errors
-setting_up_container
-network_check
-update_os
-
-msg_info "Installing Dependencies"
-$STD apt install -y apt-transport-https
-curl -fsSL "https://dl.ui.com/unifi/unifi-repo.gpg" -o "/usr/share/keyrings/unifi-repo.gpg"
-cat <<EOF | sudo tee /etc/apt/sources.list.d/100-ubnt-unifi.sources >/dev/null
-Types: deb
-URIs: https://www.ui.com/downloads/unifi/debian
-Suites: stable
-Components: ubiquiti
-Architectures: amd64
-Signed-By: /usr/share/keyrings/unifi-repo.gpg
-EOF
-$STD apt update
-msg_ok "Installed Dependencies"
-
-JAVA_VERSION="21" setup_java
-
-if lscpu | grep -q 'avx'; then
-  MONGO_VERSION="8.0" setup_mongodb
-else
-  msg_error "No AVX detected (CPU-Flag)! We have discontinued support for this. You are welcome to try it manually with a Debian LXC, but due to the many issues with Unifi, we currently only support AVX CPUs."
-  exit 10
-fi
-
-if ! dpkg -l | grep -q 'libssl1.1'; then
-  msg_info "Installing libssl (if needed)"
-  curl -fsSL "https://security.debian.org/debian-security/pool/updates/main/o/openssl/libssl1.1_1.1.1w-0+deb11u4_amd64.deb" -o "/tmp/libssl.deb"
-  $STD dpkg -i /tmp/libssl.deb
-  rm -f /tmp/libssl.deb
-  msg_ok "Installed libssl1.1"
-fi
-
-msg_info "Installing UniFi Network Server"
-$STD apt install -y unifi
-msg_ok "Installed UniFi Network Server"
-
-motd_ssh
-customize
-cleanup_lxc