fix: No warning for None values and remove a doc dependency (#4197)

1. Remove tensorflow dependency as it is supported for Python version <=
3.10.
2. quarto-cli works fine after updating ansys-sphinx-theme.
3. Do not show a warning if graphics_drivers or ui_mode are None.

We will merge this PR before creating a release.

Earlier -

```
solver = launch_fluent(start_container=True, dry_run=True)
/home/hpohekar/pyfluent/src/ansys/fluent/core/launcher/launch_options.py:309: PyFluentUserWarning: User-specified value for graphics driver is ignored while launching Fluent without GUI or without graphics.
  warnings.warn(
pyfluent.launcher WARNING: Configuring Fluent container to mount to /home/hpohekar/pyfluent, with this path available as /home/container/workdir for the Fluent session running inside the container.
```

Now - 

```
solver = launch_fluent(start_container=True, dry_run=True)
pyfluent.launcher WARNING: Configuring Fluent container to mount to /home/hpohekar/pyfluent, with this path available as /home/container/workdir for the Fluent session running inside the container.
```

---------

Co-authored-by: pyansys-ci-bot <[email protected]>

Author: hpohekar

doc/changelog.d/4197.fixed.md

@@ -0,0 +1 @@
+No warning for None values and remove a doc dependency

pyproject.toml

@@ -72,7 +72,6 @@ docs = [
     "quarto-cli==1.7.32",
     "pdf2image==1.17.0",
     "seaborn>=0.13.2",
-    "tensorflow>=2.17.0",
 ]
 
 [tool.flit.module]

src/ansys/fluent/core/launcher/launch_options.py

@@ -293,6 +293,11 @@ def _get_graphics_driver(
     ui_mode: UIMode | None = None,
 ):
     ui_mode_ = UIMode(ui_mode)
+    if graphics_driver is not None and ui_mode_ not in {UIMode.GUI, UIMode.HIDDEN_GUI}:
+        warnings.warn(
+            "User-specified value for graphics driver is ignored while launching Fluent without GUI or without graphics.",
+            PyFluentUserWarning,
+        )
     if isinstance(
         graphics_driver, (FluentWindowsGraphicsDriver, FluentLinuxGraphicsDriver)
     ):
@@ -302,14 +307,6 @@ def _get_graphics_driver(
         if is_windows()
         else FluentLinuxGraphicsDriver(graphics_driver)
     )
-    if graphics_driver.value != "null" and ui_mode_ not in {
-        UIMode.GUI,
-        UIMode.HIDDEN_GUI,
-    }:
-        warnings.warn(
-            "User-specified value for graphics driver is ignored while launching Fluent without GUI or without graphics.",
-            PyFluentUserWarning,
-        )
     if _should_add_driver_null(ui_mode_):
         return (
             FluentWindowsGraphicsDriver.NULL

tests/test_launcher.py

@@ -706,3 +706,9 @@ def test_warning_in_linux():
             ui_mode=UIMode.NO_GUI_OR_GRAPHICS,
         )
         assert driver == FluentLinuxGraphicsDriver.NULL
+
+
+def test_no_warning_for_none_values(caplog):
+    driver = _get_graphics_driver(graphics_driver=None, ui_mode=None)  # noqa: F841
+    assert "PyFluentUserWarning" not in caplog.text
+    caplog.clear()