Update alexa.smart_home.markdown (#31419)

Removed references to the Alexa web-based app since it has been retired by Amazon.

source/_integrations/alexa.smart_home.markdown

@@ -100,7 +100,6 @@ Steps to Integrate an Amazon Alexa Smart Home Skill with Home Assistant:
   - [Water heater](#water-heater)
     - [Set target temperature](#set-target-temperature)
     - [Operation Mode](#operation-mode)
-- [Alexa Web-Based App](#alexa-web-based-app)
 - [Troubleshooting](#troubleshooting)
 - [Debugging](#debugging)
 
@@ -266,9 +265,8 @@ Alexa needs to link your Amazon account to your Home Assistant account. Therefor
 </p>
 
 - Click `Save` button in the top right corner.
-- Next, you will use the Alexa Mobile App or the [Alexa web-based app](#alexa-web-based-app) to link your account.
+- Next, you will use the Alexa Mobile App to link your account.
   - In the Alexa app, navigate to `More` -> `Skills & Games` -> `Your Skills` -> `Dev`
-  - Or In the Alexa web app, navigate to `Skills` -> `Your Skills` in the top right -> `Dev Skill`
   - Click the Smart Home skill you just created.
   - Click `Enable to use`.
   - A new window will open to direct you to your Home Assistant's login screen.
@@ -1078,21 +1076,6 @@ If the water heater entity supports on/off, use _"turn on"_ and _"turn off"_ utt
 - _"Alexa, turn on the [mode utterance]."_
 - _"Alexa, turn off the [entity name]."_
 
-## Alexa Web-Based App
-
-The following is a list of regions and the corresponding URL for the web-based Alexa app:
-
-- United States: `https://alexa.amazon.com`
-- United Kingdom: `https://alexa.amazon.co.uk`
-- Germany: `https://alexa.amazon.de`
-- Japan: `https://alexa.amazon.co.jp`
-- Canada: `https://alexa.amazon.ca`
-- Australia: `https://alexa.amazon.com.au`
-- India: `https://alexa.amazon.in`
-- Spain: `https://alexa.amazon.es`
-- France: `https://alexa.amazon.fr`
-- Italy: `https://alexa.amazon.it`
-
 ## Troubleshooting
 
 ### Binary Sensor not available in Routine Trigger <!-- omit in toc -->