The QtQuickParticles module is actually a QML plugin, even though it is
installed to lib/, and it doesn't have useful public API.

The QmlDevTools module is internal and non-stable API.

This avoids creating CMake files for those modules.

Change-Id: Iae7a66b18728d65aa6abd660365f0878bc6574a4
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>