Do not show progress bar when disabling wifi.

Bug: 34286786
Test: make, test on device.
Change-Id: I109ac05ce3565abc3d80ecec2879c2f7c8bc1724
diff --git a/src/com/android/settings/wifi/WifiSettings.java b/src/com/android/settings/wifi/WifiSettings.java
index af4d8f8..359fc9a 100644
--- a/src/com/android/settings/wifi/WifiSettings.java
+++ b/src/com/android/settings/wifi/WifiSettings.java
@@ -645,7 +645,6 @@
 
             case WifiManager.WIFI_STATE_DISABLING:
                 addMessagePreference(R.string.wifi_stopping);
-                setProgressBarVisible(true);
                 break;
 
             case WifiManager.WIFI_STATE_DISABLED: