IMPORTANT In order to delete a budget/scenario you need to OWN the company (or have the proper manage rights), not "share" the company. Review that you are indeed the OWNER of the company first before deleting a budget/scenario.
Access your company list:
Then, tap the recycle bin to the right of the budget you do not want to keep in the My companies section.
CAUTION: This operation is irreversible.
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