tray: drop dead iconMenuNetbird and openRoute after menu rework

The menu reorganisation removed the About brand-mark bitmap and rerouted
every openRoute caller to WindowManager auxiliary windows, leaving both
the iconMenuNetbird embed (all three platforms) and the openRoute helper
unreferenced. Remove them so the unused linter passes.

client/ui/icons_menu_darwin.go

@@ -9,17 +9,6 @@ import _ "embed"
 // weight of the surrounding row text. Windows ships a 16x16 variant
 // (Win32 SM_CXMENUCHECK slot) and Linux a 24x24 variant (GTK menu row
 // supports the larger range) — see the sibling icons_menu_*.go files.
-//
-// iconMenuNetbird on macOS is an 18x18 downscale of the 256x256 brand
-// PNG (assets/netbird.png — the same file the legacy Fyne client used
-// for its About row). Sized to sit visually alongside the row text —
-// the full 256x256 source stretched the row vertically, 22x22 read
-// noticeably larger than the surrounding "A" of "About", and 14x14
-// shrank below the cap height. 18 keeps the brand mark legible without
-// dominating the row.
-
-//go:embed assets/netbird-menu-about-18.png
-var iconMenuNetbird []byte
 
 //go:embed assets/netbird-menu-dot-connected-22.png
 var iconMenuDotConnected []byte

client/ui/icons_menu_linux.go

@@ -9,17 +9,8 @@ import _ "embed"
 // cleanly next to the row text across the GNOME / KDE / minimal-WM
 // flavours we ship to. Windows ships a 16x16 variant (Win32
 // SM_CXMENUCHECK slot) and macOS a 22x22 variant — see the sibling
-// icons_menu_*.go files.
+// icons_menu_*.go files. Status dots are the canonical 24x24 originals
-//
+// used everywhere else in the legacy Fyne tray.
-// Regenerate the brand mark from assets/svg/netbird-menu.svg (vector
-// source — re-rendering keeps the strokes crisp at every target size):
-//   inkscape assets/svg/netbird-menu.svg -o netbird-menu-24.png -w 24 -h 24 \
-//     --export-background-opacity=0
-// Status dots are the canonical 24x24 originals used everywhere else
-// in the legacy Fyne tray.
-
-//go:embed assets/netbird-menu-24.png
-var iconMenuNetbird []byte
 
 //go:embed assets/netbird-menu-dot-connected.png
 var iconMenuDotConnected []byte

client/ui/icons_menu_windows.go

@@ -8,21 +8,13 @@ import _ "embed"
 // paints the HBITMAP into the check-mark slot, sized to SM_CXMENUCHECK /
 // SM_CYMENUCHECK (typically 16x16 at 100% DPI). Larger bitmaps overflow
 // the row visually, so Windows ships its own scaled set instead of the
-// 24x24 assets used on macOS/Linux. Regenerate the brand mark from
+// 24x24 assets used on macOS/Linux. The status dots are downscaled from
-// assets/svg/netbird-menu.svg (vector source — re-rendering keeps the
+// the 24x24 originals with ImageMagick — simple solid-fill circles
-// strokes crisp at every target size):
+// survive the bicubic resize without visible quality loss:
-//   inkscape assets/svg/netbird-menu.svg -o netbird-menu-16.png -w 16 -h 16 \
-//     --export-background-opacity=0
-// The status dots are downscaled from the 24x24 originals with
-// ImageMagick — simple solid-fill circles survive the bicubic resize
-// without visible quality loss:
 //   magick netbird-menu-dot-<state>.png -resize 16x16 \
 //     -background none -gravity center -extent 16x16 \
 //     netbird-menu-dot-<state>-16.png
 
-//go:embed assets/netbird-menu-16.png
-var iconMenuNetbird []byte
-
 //go:embed assets/netbird-menu-dot-connected-16.png
 var iconMenuDotConnected []byte
 

client/ui/tray.go

@@ -454,15 +454,6 @@ func (t *Tray) buildMenu() *application.Menu {
 	return menu
 }
 
-func (t *Tray) openRoute(route string) {
-	if t.window == nil {
-		return
-	}
-	t.window.Show()
-	t.window.Focus()
-	t.window.SetURL("/#" + route)
-}
-
 func (t *Tray) handleConnect() {
 	// NeedsLogin/SessionExpired/LoginFailed mean the daemon won't honor a
 	// plain Up RPC ("up already in progress: current status NeedsLogin") —