Question about depolying while using qml modules

[ultimica]

Hi,
While I deploy my exe using windeployqt like this

windeployqt --qmldir ./qml "myexe.exe"

I put all my needed import modules in a file in the folder name "qml".

//qmlimports.qml
import QtQuick 2.0
import QtQuick 2.5
import QtQuick.Controls 1.4
import QtQuick.Controls 1.5
import QtQuick.Controls.Styles 1.4
import QtGraphicalEffects 1.0
 QtObject {}

It works correctly.

But I saw the deployed folder shows extra folders and some of the folder even shows up qml files. (Like picture below)

Is that necessary for qt quick deployment?
or is there anyway to export dependency without seeing qml files (only dlls)?

Thanks for help