This reverts the following commits:
d12d2949d126c3bec09b49b08f96e8
We can't easily predict all code paths for QDesigner
with such a microoptimization. We also don't want
to generate three different string constructions
depending on some sophisticated heuristics.
[ChangeLog][uic] The -no-stringliteral option is now deprecated and
UIC will not generate QStringLiteral anymore.
Task-number: QTBUG-65251
Task-number: QTBUG-51602
Change-Id: I34a5a1934a8df19c5c84ac2ba8e5168ce5665037
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>