Revert "exp push: add trailing slash to the endpoint url" (#9243)

Revert "exp push: add trailing slash to the endpoint url (#9240)"

This reverts commit 5485275b92.

dvc/repo/experiments/push.py

@@ -121,7 +121,7 @@ def _notify_studio(
     import requests
     from requests.adapters import HTTPAdapter
 
-    endpoint = urljoin(url or STUDIO_URL, "/webhook/dvc/")
+    endpoint = urljoin(url or STUDIO_URL, "/webhook/dvc")
     session = requests.Session()
     session.mount(endpoint, HTTPAdapter(max_retries=3))
 

tests/unit/repo/experiments/test_push.py

@@ -18,7 +18,7 @@ def test_notify_studio_for_exp_push(mocker):
 
     assert mock_post.called
     assert mock_post.call_args == mocker.call(
-        urljoin(STUDIO_URL, "/webhook/dvc/"),
+        urljoin(STUDIO_URL, "/webhook/dvc"),
         json={
             "repo_url": "[email protected]:iterative/dvc.git",
             "client": "dvc",