Misc search summary text updates.

- Remove static text from default app summaries.They will be filled
dynamically at runtime, so we don't need the static ones here.
- Remove summaryOn/summaryOff strings from a few fragments. Search
framework does not need them.

Change-Id: I165766073ba70aceead88c3df02d62f3700e4592
Fix: 36474747
Fix: 34573952
Test: run existing tests

src/com/android/settings/accessibility/AccessibilitySettings.java

@@ -775,8 +775,6 @@ public class AccessibilitySettings extends SettingsPreferenceFragment implements
                 SearchIndexableRaw indexable = new SearchIndexableRaw(context);
                 indexable.key = componentName.flattenToString();
                 indexable.title = service.getResolveInfo().loadLabel(packageManager).toString();
-                indexable.summaryOn = context.getString(R.string.accessibility_feature_state_on);
-                indexable.summaryOff = context.getString(R.string.accessibility_feature_state_off);
                 indexable.screenTitle = screenTitle;
                 indexables.add(indexable);
             }