Remove explicit toUpperCase after CountryDetector is fixed to return

uppercase region code.

Change-Id: I111d5792b67eb0e16a7278a731097f305cb9a059

telephony/java/android/telephony/PhoneNumberFormattingTextWatcher.java

@@ -94,9 +94,6 @@ public class PhoneNumberFormattingTextWatcher implements TextWatcher {
      */
     public PhoneNumberFormattingTextWatcher(String countryCode) {
         if (countryCode == null) throw new IllegalArgumentException();
-        // TODO: remove this once CountryDetector.detectCountry().getCountryIso() is fixed to always
-        // return uppercase. Tracked at b/4941319.
-        countryCode = countryCode.toUpperCase(Locale.ENGLISH);
         mFormatter = PhoneNumberUtil.getInstance().getAsYouTypeFormatter(countryCode);
     }
 

telephony/java/com/android/internal/telephony/CallerInfo.java

@@ -526,16 +526,6 @@ public class CallerInfo {
                   + countryIso);
         }
 
-        // Temp workaround: The current libphonenumber library requires
-        // the countryIso to be uppercase (e.g. "US") but the
-        // detector.detectCountry().getCountryIso() call currently returns
-        // "us".  Passing "us" to util.parse() will just result in a
-        // NumberParseException.
-        // So force the countryIso to uppercase for now.
-        // TODO: remove this once getCountryIso() is fixed to always
-        // return uppercase.
-        countryIso = countryIso.toUpperCase();
-
         PhoneNumber pn = null;
         try {
             if (VDBG) Log.v(TAG, "parsing '" + number