Revert "Temporarily disable tst_QJSEngine tests [...]"
Revert "Temporarily disable tst_QJSEngine tests [...]"

This reverts commit 17ae095602bf36ece892598e69f794ef982c603b.

The test can be re-enabled now.

Change-Id: I0134365edbfd4aed05665bf16b8e15221fe62d67
Reviewed-by: Sergio Ahumada <27ca633ce817d1c3858ceeac3c99febb78411853@digia.com>

qmlc/qtdeclarative,matthewvogt/qtdeclarative,matthewvogt/qtdeclarative,matthewvogt/qtdeclarative,matthewvogt/qtdeclarative,qmlc/qtdeclarative,qmlc/qtdeclarative,mgrunditz/qtdeclarative-2d,mgrunditz/qtdeclarative-2d,mgrunditz/qtdeclarative-2d,mgrunditz/qtdeclarative-2d,qmlc/qtdeclarative,mgrunditz/qtdeclarative-2d,qmlc/qtdeclarative,qmlc/qtdeclarative,matthewvogt/qtdeclarative,matthewvogt/qtdeclarative,matthewvogt/qtdeclarative,mgrunditz/qtdeclarative-2d,matthewvogt/qtdeclarative,qmlc/qtdeclarative,mgrunditz/qtdeclarative-2d,qmlc/qtdeclarative