Remove orphaned Python 3.8 (x86) in Windows toolsets 2019 and 2022 (#12335)

* [Windows] Remove VCRedist from Toolsets

[Windows] Update AzureCosmosDbEmulator signature and Removing VSredist 17 installation in Postgresql (#12247)

* [Windows] Remove VCRedist from Toolsets

[Windows] Update AzureCosmosDbEmulator signature and Removing VSredist 17 installation in Postgresql (#12247)

* Setting first version following other tools

* Setting first version following other tools

* Setting first version following other tools

* Remove orphaned Python 3.8 (x86) from toolset-2019.json and toolset-2022.json

**Remove orphaned Python 3.8 (x86) from toolset-2019.json & 2022.json**

This PR removes the orphaned entry for Python 3.8 (x86) from toolset-2019.json.
- Python 3.8 (x86) is not included in the x64 list and is not required for current or future builds.
- Keeping only actively supported and required Python versions helps reduce image size and maintenance overhead.

**Summary of changes:**
- Removed `"3.8.*"` from the `versions` array for Python x86.

* Remove Ubuntu 20.04 Readme, empty but not deleted

---------

Co-authored-by: Jacob Blanco <jblanco@devx.es>

images/windows/toolsets/toolset-2019.json

@@ -31,7 +31,6 @@
             "arch": "x86",
             "platform" : "win32",
             "versions": [
-                "3.8.*",
                 "3.9.*",
                 "3.10.*",
                 "3.11.*",

images/windows/toolsets/toolset-2022.json

@@ -31,7 +31,6 @@
             "arch": "x86",
             "platform" : "win32",
             "versions": [
-                "3.8.*",
                 "3.9.*",
                 "3.10.*",
                 "3.11.*",