Fix: Remove installation of Python 3 in CI for Windows (#36596)

Summary:
We used to have to install python 3 on windows. Starting from yesterday (22/03/2023) the `build_hermesc_window` job started failing because Python3 is already installed on the default machine.

## Changelog:

[INTERNAL] [FIXED] - Skip installing python 3 on Windows as it's already there.

Pull Request resolved: #36596

Test Plan: CircleCI must be green

Reviewed By: hoxyq

Differential Revision: D44330936

Pulled By: cipolleschi

fbshipit-source-id: b58190f707be309d919aceb80af717046c9476b4

Author: cipolleschi

.circleci/config.yml

@@ -1368,8 +1368,6 @@ jobs:
             if (-not(Test-Path -Path $Env:HERMES_WS_DIR\win64-bin\hermesc.exe)) {
               choco install --no-progress cmake --version 3.14.7
               if (-not $?) { throw "Failed to install CMake" }
-              choco install --no-progress python3
-              if (-not $?) { throw "Failed to install Python" }
 
               cd $Env:HERMES_WS_DIR\icu
               # If Invoke-WebRequest shows a progress bar, it will fail with