Remove unused tests section (#635)

* Remove unused docker file

* Regenerate client from commit d3a053a of spec repo

Co-authored-by: Thomas Hervé <[email protected]>
Co-authored-by: api-clients-generation-pipeline[bot] <54105614+api-clients-generation-pipeline[bot]@users.noreply.github.com>
Co-authored-by: ci.datadog-api-spec <[email protected]>

Author: 3 people

.apigentools-info

@@ -4,13 +4,13 @@
     "spec_versions": {
         "v1": {
             "apigentools_version": "1.5.1.dev2",
-            "regenerated": "2021-10-22 11:06:23.935548",
-            "spec_repo_commit": "436b9e1"
+            "regenerated": "2021-10-25 08:34:02.719701",
+            "spec_repo_commit": "d3a053a"
         },
         "v2": {
             "apigentools_version": "1.5.1.dev2",
-            "regenerated": "2021-10-22 11:07:02.031560",
-            "spec_repo_commit": "436b9e1"
+            "regenerated": "2021-10-25 08:34:45.321798",
+            "spec_repo_commit": "d3a053a"
         }
     }
 }