Ignore local and non-filesystem qml imports.

Make macdeplpoyqt deploy qml imports from Qml2ImportsPath
only. js and local imports should be deployed as a
part of the application build. Remote (network) imports
should be loaded at run-time.

Task-number: QTBUG-38533
Change-Id: I322f588912bcbb65fbc45676faaa3de76d625bef
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>