Use system locale when formatting national phone numbers

Fix the issue preventing the national phone number not getting formatted
according to the current system locale.

Bug: 171216356
Fixes: 171216356
Test: manual
Change-Id: I28a4a1350e36892b25b6ac0b907403bbae90b3f1
diff --git a/car-telephony-common/src/com/android/car/telephony/common/TelecomUtils.java b/car-telephony-common/src/com/android/car/telephony/common/TelecomUtils.java
index a790318..8f7f8ba 100644
--- a/car-telephony-common/src/com/android/car/telephony/common/TelecomUtils.java
+++ b/car-telephony-common/src/com/android/car/telephony/common/TelecomUtils.java
@@ -129,11 +129,10 @@
         }
 
         String countryIso = getCurrentCountryIsoFromLocale(context);
-        L.d(TAG, "PhoneNumberUtils.formatNumberToE16, number: "
-                    + piiLog(number) + ", country: " + countryIso);
+        L.d(TAG, "PhoneNumberUtils.formatNumber, number: " + piiLog(number)
+                + ", country: " + countryIso);
 
-        String e164 = PhoneNumberUtils.formatNumberToE164(number, countryIso);
-        String formattedNumber = PhoneNumberUtils.formatNumber(number, e164, countryIso);
+        String formattedNumber = PhoneNumberUtils.formatNumber(number, countryIso);
         formattedNumber = TextUtils.isEmpty(formattedNumber) ? number : formattedNumber;
         L.d(TAG, "getFormattedNumber, result: " + piiLog(formattedNumber));