Remove logic to read the key from GServices

Bug: 12492817

The key is now stored in webview apk so remove the logic
to read from GServices.

Change-Id: I9f9b57d59885d93023be307a80d5a7db143ffbfe

src/com/android/settings/DevelopmentSettings.java

@@ -369,12 +369,6 @@ public class DevelopmentSettings extends SettingsPreferenceFragment
         mAllPrefs.add(mProcessStats);
 
         mWebViewDataReductionProxy = findAndInitCheckboxPref(WEBVIEW_DATA_REDUCTION_PROXY_KEY);
-        String key = Settings.Global.getString(getActivity().getContentResolver(),
-                Settings.Global.WEBVIEW_DATA_REDUCTION_PROXY_KEY);
-        // Disable the selection if the key is not available for some reason.
-        if (key == null || key.isEmpty()) {
-            disableForUser(mWebViewDataReductionProxy);
-        }
     }
 
     private ListPreference addListPreference(String prefKey) {