chore: remove unused mod_auth_any auth provider

mod_auth_any is never enabled in the config (auth is internal_hashed,
http_async, or anonymous) and nothing references it.

Part-of: <http://gitlab.vnc.biz/uxf/vnctalk-prosody/-/merge_requests/3>

vnctalk/mod_auth_any.lua

@@ -1,51 +0,0 @@
--- Prosody IM
--- Copyright (C) 2008-2010 Matthew Wild
--- Copyright (C) 2008-2010 Waqas Hussain
---
--- This project is MIT/X11 licensed. Please see the
--- COPYING file in the source package for more information.
---
--- luacheck: ignore 212
-
-local datamanager = require "util.datamanager";
-local new_sasl = require "util.sasl".new;
-
-local host = module.host;
-local provider = { name = "any" };
-
-function provider.test_password(username, password)
-	return true;
-end
-
-function provider.set_password(username, password)
-	local account = datamanager.load(username, host, "accounts");
-	if account then
-		account.password = password;
-		return datamanager.store(username, host, "accounts", account);
-	end
-	return nil, "Account not available.";
-end
-
-function provider.user_exists(username)
-	return true;
-end
-
-function provider.create_user(username, password)
-	return datamanager.store(username, host, "accounts", {password = password});
-end
-
-function provider.delete_user(username)
-	return datamanager.store(username, host, "accounts", nil);
-end
-
-function provider.get_sasl_handler()
-	local getpass_authentication_profile = {
-		plain_test = function(sasl, username, password, realm)
-			return true, true;
-		end
-	};
-	return new_sasl(module.host, getpass_authentication_profile);
-end
-
-module:add_item("auth-provider", provider);
-