VSCode settings import refactor (#40513)

A small follow-up to the settings refactor of a few weeks ago to move
all the VSCode settings imports
to one place.

This should make it easier to spot missing imports, and easier to test
the importer.

Release Notes:

- N/A

crates/git_ui/src/git_panel_settings.rs

@@ -2,7 +2,7 @@ use editor::EditorSettings;
 use gpui::Pixels;
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
-use settings::{Settings, SettingsContent, StatusStyle};
+use settings::{Settings, StatusStyle};
 use ui::{
     px,
     scrollbars::{ScrollbarVisibility, ShowScrollbar},
@@ -58,16 +58,4 @@ impl Settings for GitPanelSettings {
             collapse_untracked_diff: git_panel.collapse_untracked_diff.unwrap(),
         }
     }
-
-    fn import_from_vscode(vscode: &settings::VsCodeSettings, current: &mut SettingsContent) {
-        if let Some(git_enabled) = vscode.read_bool("git.enabled") {
-            current.git_panel.get_or_insert_default().button = Some(git_enabled);
-        }
-        if let Some(default_branch) = vscode.read_string("git.defaultBranchName") {
-            current
-                .git_panel
-                .get_or_insert_default()
-                .fallback_branch_name = Some(default_branch.to_string());
-        }
-    }
 }