util/unicode: readEastAsianWidth(): remove simplified() call

All users of the split()ed value handle intervening whitespace
already:

- fields[0] is piped through parseHexRange(), which does

- fields[1] has trimmed() called on it before lookup and all
  idnaStatusMap values are space-free (cf. initIdnaStatusMap())

As a consequence, we can accept the line by reference to const
QByteArray now.

Amends 838a7a01f3.

Pick-to: 6.10 6.9 6.8 6.5
Change-Id: I53247332c624a192fcaca6009a3f20cb8c65786a
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>

util/unicode/main.cpp

@@ -1629,9 +1629,7 @@ static void readDerivedAge()
 static void readEastAsianWidth()
 {
     readUnicodeFile("EastAsianWidth.txt",
-                    [] (QByteArray &line, int lineNo) {
-        line = std::move(line).simplified();
-
+                    [] (const QByteArray &line, int lineNo) {
         QList<QByteArray> fields = line.split(';');
         Q_ASSERT(fields.size() == 2);