Remove unused IS_RAW_DATA() macros from q{string,bytearray}.cpp

They were made redundant at Qt 6, so now they're just defined and undefined.
Don't even do that any more.

Change-Id: Ic4a4a4c39c50c9af417ea6c52be5f69a2d4856c6
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

src/corelib/text/qbytearray.cpp

@@ -34,8 +34,6 @@
 
 #include <algorithm>
 
-#define IS_RAW_DATA(d) ((d)->flags() & QArrayData::RawDataType)
-
 QT_BEGIN_NAMESPACE
 
 Q_CONSTINIT const char QByteArray::_empty = '\0';
@@ -5145,5 +5143,4 @@ size_t qHash(const QByteArray::FromBase64Result &key, size_t seed) noexcept
 
 QT_END_NAMESPACE
 
-#undef IS_RAW_DATA
 #undef REHASH

src/corelib/text/qstring.cpp

@@ -66,7 +66,6 @@
 #define ULLONG_MAX quint64_C(18446744073709551615)
 #endif
 
-#define IS_RAW_DATA(d) ((d.d)->flags & QArrayData::RawDataType)
 #define REHASH(a) \
     if (sl_minus_1 < sizeof(std::size_t) * CHAR_BIT)  \
         hashHaystack -= std::size_t(a) << sl_minus_1; \
@@ -10033,5 +10032,4 @@ void QAbstractConcatenable::appendLatin1To(QLatin1StringView in, QChar *out) noe
 
 QT_END_NAMESPACE
 
-#undef IS_RAW_DATA
 #undef REHASH