Remove deprecated features and plugins for 11.0.0 (#10126)

* Bump version to 11.0.0.

* Removed deprecated plugins/modules.

* Remove _init_session().

* Remove ack_venv_creation_deprecation.

* Change behavior of state.

* Remove value reading.

* Remove list_all.

* Remove various deprecated module helper things.

* Change default of proxmox's update parameter.

* Fix constructor command order.

Co-authored-by: Alexei Znamensky <103110+russoz@users.noreply.github.com>

* MH: adjust guide

---------

Co-authored-by: Alexei Znamensky <103110+russoz@users.noreply.github.com>
Co-authored-by: Alexei Znamensky <russoz@gmail.com>

plugins/doc_fragments/clc.py

@@ -1,28 +0,0 @@
-# -*- coding: utf-8 -*-
-
-# Copyright (c) 2024, Alexei Znamensky <russoz@gmail.com>
-# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
-# SPDX-License-Identifier: GPL-3.0-or-later
-
-from __future__ import (absolute_import, division, print_function)
-__metaclass__ = type
-
-
-class ModuleDocFragment(object):
-
-    # Standard documentation fragment
-    DOCUMENTATION = r"""
-options: {}
-requirements:
-  - requests >= 2.5.0
-  - clc-sdk
-notes:
-  - To use this module, it is required to set the below environment variables which enables access to the Centurylink Cloud.
-  - E(CLC_V2_API_USERNAME), the account login ID for the Centurylink Cloud.
-  - E(CLC_V2_API_PASSWORD), the account password for the Centurylink Cloud.
-  - Alternatively, the module accepts the API token and account alias. The API token can be generated using the CLC account
-    login and password using the HTTP API call @ U(https://api.ctl.io/v2/authentication/login).
-  - E(CLC_V2_API_TOKEN), the API token generated from U(https://api.ctl.io/v2/authentication/login).
-  - E(CLC_ACCT_ALIAS), the account alias associated with the Centurylink Cloud.
-  - Users can set E(CLC_V2_API_URL) to specify an endpoint for pointing to a different CLC environment.
-"""