Remove urllib3 dependency (#36609)

urllib3 was listed as a dependency under ray[k8s] (and therefore ray[all]), but upon inspection it seems it isn't actually used.

This PR removes urllib3 from the dependencies.

In this PR, ray[k8s] is also removed since urllib3 was the only dependency there. I confirmed manually that pip install ray[doesnotexist] doesn't fail, so this PR won't break any existing user scripts that contain pip install ray[k8s].

Signed-off-by: Archit Kulkarni <architkulkarni@users.noreply.github.com>

python/ray/autoscaler/_private/autoscaler.py

@@ -78,12 +78,6 @@
 )
 from ray.core.generated import gcs_service_pb2, gcs_service_pb2_grpc
 
-try:
-    from urllib3.exceptions import MaxRetryError
-except ImportError:
-    MaxRetryError = None
-
-
 logger = logging.getLogger(__name__)
 
 # Status of a node e.g. "up-to-date", see ray/autoscaler/tags.py

python/requirements.txt

@@ -40,7 +40,6 @@ colorful
 pyyaml
 rich
 gpustat>=1.0.0
-urllib3
 opentelemetry-sdk
 fastapi
 virtualenv<20.21.1,>=20.0.24

python/setup.py

@@ -264,7 +264,6 @@ def get_packages(self):
         ],
         "serve": ["uvicorn", "requests", "starlette", "fastapi", "aiorwlock"],
         "tune": ["pandas", "tensorboardX>=1.9", "requests", pyarrow_dep],
-        "k8s": ["urllib3"],
         "observability": [
             "opentelemetry-api",
             "opentelemetry-sdk",