Remove STOPSHIP part of the logging in telephony

We still need the log itself to trap the exceptional case.

Bug: 6201805
Change-Id: I62d12f6a1ed41817ee12c0f5c7fc4aa0a967a60f

Author: Daisuke Miyakawa

telephony/java/android/telephony/PhoneNumberUtils.java

@@ -1711,12 +1711,8 @@ private static boolean isEmergencyNumberInternal(String number,
             return false;
         }
 
-        // STOPSHIP: remove this after figuring out issue 5914560, 6383850.
         Log.d(LOG_TAG, "System property doesn't provide any emergency numbers."
-                + " Use embedded logic for determining emergency numbers."
-                + " number: " + toLogSafePhoneNumber(number)
-                + ", Iso: " + defaultCountryIso
-                + ", useExactMatch: " + useExactMatch);
+                + " Use embedded logic for determining ones.");
 
         // No ecclist system property, so use our own list.
         if (defaultCountryIso != null) {
@@ -1735,21 +1731,6 @@ private static boolean isEmergencyNumberInternal(String number,
         }
     }
 
-    private static String toLogSafePhoneNumber(String number) {
-        // Do exactly same thing as Uri#toSafeString() does, which will enable us to compare
-        // sanitized phone numbers.
-        StringBuilder builder = new StringBuilder();
-        for (int i = 0; i < number.length(); i++) {
-            char c = number.charAt(i);
-            if (c == '-' || c == '@' || c == '.') {
-                builder.append(c);
-            } else {
-                builder.append('x');
-            }
-        }
-        return builder.toString();
-    }
-
     /**
      * Checks if a given number is an emergency number for the country that the user is in. The
      * current country is determined using the CountryDetector.