Remove obsolete TODO in AllInOneTetherSettings

These TODO are for b/147325229 which is obsolete now. Clean them up.
Test: build successful, CodeInspectionTest

Change-Id: Ibae56812810d870e728bbb685c2c3b1ba4fb2866

src/com/android/settings/AllInOneTetherSettings.java

@@ -201,8 +201,6 @@ public final class AllInOneTetherSettings extends RestrictedDashboardFragment
 
         // Set initial state based on SharedPreferences value.
         onSharedPreferenceChanged(mSharedPreferences, KEY_ENABLE_WIFI_TETHERING);
-
-        // TODO(b/147325229): Hide advanced settings like security and ap band.
     }
 
     @Override
@@ -320,12 +318,6 @@ public final class AllInOneTetherSettings extends RestrictedDashboardFragment
         return TAG;
     }
 
-    @Override
-    public void onExpandButtonClick() {
-        super.onExpandButtonClick();
-        // TODO(b/147325229): Display hidden advanced settings like security and ap band.
-    }
-
     @Override
     public int getHelpResource() {
         return R.string.help_url_tether;