Messaging: Language cleanup

No unnecessary boxing, enhanced for loops, redundant checks and throws,
imports (removal, reordering), possible void returns

Change-Id: I7a8e1b2007e3b0906e01b41785c518d02c2f3fab

src/com/android/messaging/sms/BugleCarrierConfigValuesLoader.java

@@ -107,9 +107,7 @@ public class BugleCarrierConfigValuesLoader implements CarrierConfigValuesLoader
         try {
             final Bundle systemValues =
                     PhoneUtils.get(subId).getSmsManager().getCarrierConfigValues();
-            if (systemValues != null) {
-                values.putAll(systemValues);
-            }
+            values.putAll(systemValues);
         } catch (final Exception e) {
             LogUtil.w(LogUtil.BUGLE_TAG, "Calling system getCarrierConfigValues exception", e);
         }