Remove PreferenceActivity

Its broken and isn't worth maintaining, instead port the few things
using it over to SettingsPreferenceActivity with wrapping blank
Activities like the rest of Settings.

Change-Id: Ic82f0dcb63ed9b4078f7da6a79c0c52f0130e8d1
Fixes: 28779941
diff --git a/src/com/android/settings/Settings.java b/src/com/android/settings/Settings.java
index 82e41cb..3c589cc 100644
--- a/src/com/android/settings/Settings.java
+++ b/src/com/android/settings/Settings.java
@@ -140,6 +140,16 @@
     public static class WallpaperSettingsActivity extends SettingsActivity { /* empty */ }
     public static class ManagedProfileSettingsActivity extends SettingsActivity { /* empty */ }
 
+    public static class ApnEditorActivity extends SettingsActivity { /* empty */ }
+    public static class ChooseAccountActivity extends SettingsActivity { /* empty */ }
+    public static class IccLockSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class ImeiInformationActivity extends SettingsActivity { /* empty */ }
+    public static class SimStatusActivity extends SettingsActivity { /* empty */ }
+    public static class StatusActivity extends SettingsActivity { /* empty */ }
+    public static class TestingSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class WifiAPITestActivity extends SettingsActivity { /* empty */ }
+    public static class WifiInfoActivity extends SettingsActivity { /* empty */ }
+
     // Categories.
     public static class WirelessSettings extends SettingsActivity { /* empty */ }
     public static class DeviceSettings extends SettingsActivity { /* empty */ }