Drop SSID display from settings, connection pill shows generic "Connected"

Real hardware testing (Pixel 10a) showed NetworkCapabilities.getTransportInfo()
consistently returns a redacted WifiInfo (SSID "<unknown ssid>", masked BSSID)
even for the app's own self-requested WifiNetworkSpecifier network, disproving
this codebase's prior assumption of a self-request exemption from
ACCESS_FINE_LOCATION for that API path (confirmed via native diagnostic
logging cross-checked against `adb shell dumpsys wifi`, which does show and
correctly attribute the true SSID at the OS level). Rather than add a location
permission with a runtime prompt purely for this cosmetic display, the
settings pill now just shows "Connected". Documented as decision 4.24.

app/lib/ui/providers/wifi_connection_provider.dart

@@ -35,15 +35,6 @@ final wifiLinkErrorReasonProvider = Provider<LinkErrorReason?>((ref) {
   return ref.watch(wifiTransportProvider).lastErrorReason;
 });
 
-/// Reaktive tatsaechliche SSID des verbundenen Netzes (Doku: "connected
-/// pille soll den WiFi-Namen anzeigen") - eigener Stream statt Ableitung aus
-/// [wifiLinkStateProvider], weil Android die SSID fuer WifiNetworkSpecifier-
-/// Netze oft erst nachtraeglich liefert (siehe UdpTransport.connectedSsidChanges/
-/// MlrsNetworkPlugin.kt), also ohne begleitenden LinkState-Wechsel.
-final wifiConnectedSsidProvider = StreamProvider<String?>((ref) {
-  final transport = ref.watch(wifiTransportProvider);
-  return transport.connectedSsidChanges;
-});
 
 /// Zeigt an, ob gerade UDP-Pakete ankommen ("receiving"/"not receiving"),
 /// unabhaengig vom (binaeren) Verbindungszustand - der Socket kann offen