Fix URIs for V3

The version 3 of the AAS meta-model removed the `www.` prefix in the
URIs used to navigate the aasx package file.

Fixes #39.

Since the samples available on the web site are incorrect according to
the specification, we remove the tests related to the official AASX
samples.

.github/workflows/test.yml

@@ -39,10 +39,6 @@ jobs:
         working-directory: src
         run: dotnet tool install coveralls.net --version 2.0.0-beta0002
 
-      - name: Download samples
-        working-directory: src
-        run: powershell .\DownloadSamples.ps1
-
       - name: Run tests
         working-directory: src
         run: powershell .\Test.ps1

doc/contributing/continuous-integration.md

@@ -62,9 +62,6 @@ Please see the source code of `src\Check.ps1` for more details.
 Our tests with external dependencies use environment variables to specify the location of the dependencies.
 While `src\Check.ps1` and related scripts set up the expected locations in the environment automatically, you need to adjust your test setting accordingly.
 
-So far, we need to set `SAMPLE_AASX_DIR` environment variable to point to the absolute path where AASX samples have been downloaded (using `src\DownloadSamples.ps1`).
-This is by definition `{your repository}\sample-aasx`.
-
 ## Github Workflows
 
 Github Actions allow for running continuous integration on Github servers.