fix: Remove unused runtime dependencies, make matplotlib optional

- Remove setuptools: Not needed. Uses importlib.metadata.entry_points (stdlib)
- Remove urllib3: Not needed. Only urllib.parse (stdlib) is used
- Move matplotlib to optional [viz] extra: Only needed for diagram.draw()

Install with visualization support: pip install datajoint[viz]

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: dimitri-yatsenko

pyproject.toml

@@ -17,10 +17,7 @@ dependencies = [
   "networkx",
   "pydot",
   "fsspec>=2023.1.0",
-  "matplotlib",
   "faker",
-  "urllib3",
-  "setuptools",
   "pydantic-settings>=2.0.0",
 ]
 
@@ -100,6 +97,7 @@ gcs = ["gcsfs>=2023.1.0"]
 azure = ["adlfs>=2023.1.0"]
 polars = ["polars>=0.20.0"]
 arrow = ["pyarrow>=14.0.0"]
+viz = ["matplotlib"]
 test = [
   "pytest",
   "pytest-cov",