Pull out XML having cube views you want to delete.
Modify the XML manually by adding the action as "delete" in the cubeviewitem tag
<cubeViewItem name="***" description="***" isVisibleInProfiles="true" isShortcut="false" shortcutCubeViewName="" action="delete">
Try loading this modified XML.
Same for data management steps/sequences.
This approach works for removing metadata relationships/members in bulk. Let me know this works for other components as well.
Hope this helps.