moc: remove unnecessary emission of "#include <qbytearray.h>"

We don't need QByteArrayData any more (since 6.0).

[ChangeLog][Potentially Source-Incompatible Changes] moc no longer emits
an #include for QByteArray in the output file. None of the content that
moc generates needed that header, so this should not cause changes for
most people. However, codebases that #include'd the moc output
(something that is recommended) could be depending on this indirect
include.

Change-Id: Id0fb9ab0089845ee8843fffd16f9cf13dc8d61b5
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
(cherry picked from commit cb0b1ee4417d67104c2c80e0c0c2d8a32e905df3)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

src/tools/moc/moc.cpp

@@ -1085,7 +1085,6 @@ void Moc::generate(FILE *out, FILE *jsonOutput)
     if (classList.size() && classList.constFirst().classname == "Qt")
         fprintf(out, "#include <QtCore/qobject.h>\n");
 
-    fprintf(out, "#include <QtCore/qbytearray.h>\n"); // For QByteArrayData
     fprintf(out, "#include <QtCore/qmetatype.h>\n");  // For QMetaType::Type
     if (mustIncludeQPluginH)
         fprintf(out, "#include <QtCore/qplugin.h>\n");