Remove deprecated MCP23017 I/O Expander integration (#21820)

CODEOWNERS

@@ -294,7 +294,6 @@ source/_integrations/lyric.markdown @timmo001
 source/_integrations/mastodon.markdown @fabaff
 source/_integrations/matrix.markdown @tinloaf
 source/_integrations/mazda.markdown @bdr99
-source/_integrations/mcp23017.markdown @jardiamj
 source/_integrations/media_source.markdown @hunterjm
 source/_integrations/mediaroom.markdown @dgomes
 source/_integrations/melcloud.markdown @vilppuvuorinen

source/_integrations/mcp23017.markdown

@@ -1,130 +0,0 @@
----
-title: MCP23017 I/O Expander
-description: Instructions on how to integrate the MCP23017 GPIO pin expander with I2C interface into Home Assistant.
-ha_category:
-  - DIY
-  - Binary Sensor
-  - Switch
-ha_release: 0.94
-ha_iot_class: Local Polling
-ha_codeowners:
-  - '@jardiamj'
-ha_domain: mcp23017
-ha_platforms:
-  - binary_sensor
-  - switch
----
-
-<div class='note warning'>
-
-This integration is deprecated and will be removed in Home Assistant Core 2022.4.
-
-For more information see: [Architectural Decision Record 0019](https://github.com/home-assistant/architecture/blob/master/adr/0019-GPIO.md).
-
-</div>
-
-The `mcp23017` integration is the base for all related mcp23017 platforms in Home Assistant. There is no setup needed for the integration itself, for the platforms please check their corresponding sections.
-
-For more details about the MCP23017 I2C I/O port expander you can find its datasheet here: [MCP23017](https://www.microchip.com/wwwproducts/en/MCP23017).
-
-If you are using the Home Assistant Operating System you can’t use existing methods to enable the I2C bus on a Raspberry Pi, you will have to [enable the I2C interface manually](https://github.com/home-assistant/operating-system/tree/dev/Documentation/boards/raspberrypi#i2c) using a USB stick. To accomplish that, follow this step by step instructions: [Enable Home Assistant Operating System i2c](/hassio/enable_i2c).
-
-## Binary Sensor
-
-The `mcp23017` binary sensor platform allows you to read sensor values from the I/O pins of your [MCP23017 I2C I/O expander](https://www.adafruit.com/product/732).
-
-The pin numbers are from 0 to 15 where: 0-7 correspond to port A (A1-A8) and 8-15 to port B (B1-B8).
-
-### Configuration
-
-To use the I/O pins of a mcp23017 connected to an I2C bus of your Raspberry Pi as binary sensors, add the following to your `configuration.yaml` file:
-
-```yaml
-# Example configuration.yaml entry
-binary_sensor:
-  - platform: mcp23017
-    i2c_address: 0x20
-    pins:
-      0: PIR Office
-      1: PIR Bedroom
-```
-
-{% configuration %}
-i2c_address:
-  description: i2c address of MCP23017 chip.
-  required: false
-  type: integer
-  default: "`0x20`"
-pins:
-  description: List of used pins.
-  required: true
-  type: map
-  keys:
-    "pin: name":
-      description: The pin numbers (from 0 to 15) and corresponding names.
-      required: true
-      type: [integer, string]
-scan_interval:
-  description: Interval to scan for sensor state changes in seconds.
-  required: false
-  type: integer
-  default: 15
-invert_logic:
-  description: If `true`, inverts the output logic to ACTIVE LOW.
-  required: false
-  type: boolean
-  default: "`false` (ACTIVE HIGH)"
-pull_mode:
-  description: >
-    Type of internal pull resistor to use.
-    Options are `UP` - pull-up resistor and `DOWN` - pull-down resistor.
-  required: false
-  type: string
-  default: "`UP`"
-{% endconfiguration %}
-
-<div class='note warning'>
-  MCP23017 only has internal pull-up resistors, if you want to use pull-down you will have to wire your own pull-down resistors.
-</div>
-
-## Switch
-
-The `mcp23017` switch platform allows you to write to the I/O pins of your [MCP23017 I2C I/O expander](https://www.adafruit.com/product/732).
-
-The pin numbers are from 0 to 15 where: 0-7 correspond to port A (A1-A8) and 8-15 to port B (B1-B8).
-
-### Configuration
-
-To use the I/O pins of a mcp23017 connected to an I2C bus of your Raspberry Pi as switches, add the following to your `configuration.yaml` file:
-
-```yaml
-# Example configuration.yaml entry
-switch:
-  - platform: mcp23017
-    i2c_address: 0x20
-    pins:
-      11: Fan Office
-      12: Light Desk
-```
-
-{% configuration %}
-i2c_address:
-  description: i2c address of MCP23017 chip.
-  required: false
-  type: integer
-  default: "`0x20`"
-pins:
-  description: Array of used pins.
-  required: true
-  type: list
-  keys:
-    pin:
-      description: The pin numbers (from 0 to 15) and corresponding names.
-      required: true
-      type: [integer, string]
-invert_logic:
-  description: If true, inverts the output logic to ACTIVE LOW.
-  required: false
-  default: false
-  type: boolean
-{% endconfiguration %}

source/_redirects

@@ -1491,7 +1491,6 @@
 /components/mastodon /integrations/mastodon
 /components/matrix /integrations/matrix
 /components/maxcube /integrations/maxcube
-/components/mcp23017 /integrations/mcp23017
 /components/media_extractor /integrations/media_extractor
 /components/media_player /integrations/media_player
 /components/mediaroom /integrations/mediaroom
@@ -2373,6 +2372,8 @@
 /components/sensor.sensehat /more-info/removed-integration 301
 /integrations/sensehat /more-info/removed-integration 301
 /integrations/pi4ioe5v9xxxx /more-info/removed-integration 301
+/components/mcp23017 /more-info/removed-integration 301
+/integrations/mcp23017 /more-info/removed-integration 301
 /components/rpi_rf /more-info/removed-integration 301
 /components/switch.rpi_rf /more-info/removed-integration 301
 /integrations/rpi_rf /more-info/removed-integration 301