Sync git button states between project diff & git panel (#26938)

Closes #ISSUE

Release Notes:

- Git action buttons are now synced between the project diff and git
panel

Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>
Co-authored-by: Piotr Osiewicz <peterosiewicz@gmail.com>

crates/git_ui/src/git_ui.rs

@@ -7,9 +7,8 @@ use git::{
     status::{FileStatus, StatusCode, UnmergedStatus, UnmergedStatusCode},
 };
 use git_panel_settings::GitPanelSettings;
-use gpui::{actions, App, Entity, FocusHandle};
+use gpui::{actions, App, FocusHandle};
 use onboarding::{clear_dismissed, GitOnboardingModal};
-use project::Project;
 use project_diff::ProjectDiff;
 use ui::prelude::*;
 use workspace::Workspace;
@@ -120,10 +119,6 @@ pub fn git_status_icon(status: FileStatus) -> impl IntoElement {
     GitStatusIcon::new(status)
 }
 
-fn can_push_and_pull(project: &Entity<Project>, cx: &App) -> bool {
-    !project.read(cx).is_via_collab()
-}
-
 fn render_remote_button(
     id: impl Into<SharedString>,
     branch: &Branch,