Remove unused scalar scattering component (#6471)

### What

A left over from how we used to time series previously. This
functionality is covered by two separate archetypes by now.

### Checklist
* [x] I have read and agree to [Contributor
Guide](https://github.com/rerun-io/rerun/blob/main/CONTRIBUTING.md) and
the [Code of
Conduct](https://github.com/rerun-io/rerun/blob/main/CODE_OF_CONDUCT.md)
* [x] I've included a screenshot or gif (if applicable)
* [x] I have tested the web demo (if applicable):
* Using examples from latest `main` build:
[rerun.io/viewer](https://rerun.io/viewer/pr/6471?manifest_url=https://app.rerun.io/version/main/examples_manifest.json)
* Using full set of examples from `nightly` build:
[rerun.io/viewer](https://rerun.io/viewer/pr/6471?manifest_url=https://app.rerun.io/version/nightly/examples_manifest.json)
* [x] The PR title and labels are set such as to maximize their
usefulness for the next release's CHANGELOG
* [x] If applicable, add a new check to the [release
checklist](https://github.com/rerun-io/rerun/blob/main/tests/python/release_checklist)!

- [PR Build Summary](https://build.rerun.io/pr/6471)
- [Recent benchmark results](https://build.rerun.io/graphs/crates.html)
- [Wasm size tracking](https://build.rerun.io/graphs/sizes.html)

To run all checks from `main`, comment on the PR with `@rerun-bot
full-check`.

crates/re_edit_ui/src/lib.rs

@@ -11,7 +11,7 @@ mod visible;
 // ----
 
 use egui::NumExt as _;
-use re_types::components::{Color, MarkerSize, Name, Radius, ScalarScattering, StrokeWidth, Text};
+use re_types::components::{Color, MarkerSize, Name, Radius, StrokeWidth, Text};
 use re_viewer_context::ViewerContext;
 
 // ----
@@ -43,23 +43,6 @@ fn edit_name_ui(_ctx: &ViewerContext<'_>, ui: &mut egui::Ui, value: &mut Name) -
     response
 }
 
-fn edit_scatter_ui(
-    _ctx: &ViewerContext<'_>,
-    ui: &mut egui::Ui,
-    value: &mut ScalarScattering,
-) -> egui::Response {
-    let scattered_text = if value.0 { "Scattered" } else { "Line" };
-
-    let outer_response = egui::ComboBox::from_id_source("scatter")
-        .selected_text(scattered_text)
-        .show_ui(ui, |ui| {
-            ui.selectable_value(&mut value.0, false, "Line")
-                | ui.selectable_value(&mut value.0, true, "Scattered")
-        });
-
-    outer_response.inner.unwrap_or(outer_response.response)
-}
-
 fn edit_radius_ui(
     _ctx: &ViewerContext<'_>,
     ui: &mut egui::Ui,
@@ -113,7 +96,6 @@ pub fn register_editors(registry: &mut re_viewer_context::ComponentUiRegistry) {
     registry.add_editor(edit_marker_size_ui);
     registry.add_editor(edit_name_ui);
     registry.add_editor(edit_radius_ui);
-    registry.add_editor(edit_scatter_ui);
     registry.add_editor(edit_stroke_width_ui);
     registry.add_editor(edit_text_ui);
     registry.add_editor(visible::edit_visible);

crates/re_types/definitions/rerun/components.fbs

@@ -25,7 +25,6 @@ include "./components/range1d.fbs";
 include "./components/resolution.fbs";
 include "./components/rotation3d.fbs";
 include "./components/scalar.fbs";
-include "./components/scalar_scattering.fbs";
 include "./components/stroke_width.fbs";
 include "./components/tensor_data.fbs";
 include "./components/texcoord2d.fbs";

tests/python/release_checklist/check_all_components_ui.py

@@ -137,7 +137,6 @@ def alternatives(self) -> list[Any] | None:
         ]
     ),
     "ScalarBatch": TestCase(3),
-    "ScalarScatteringBatch": TestCase(True),
     "StrokeWidthBatch": TestCase(2.0),
     "TensorDataBatch": TestCase(
         alternatives=[