It's important that all your transactions are entered correctly so your books can be well balanced. QuickBooks Online is a great tool able to take photos of receipts in the mobile app so you can categorize them. I can point you in the right direction to delete these unwanted receipts.
While in the mobile app, the only way to delete the receipts would be to do so one by one. To do so, click on the transaction you want to delete as if you were to want to categorize it, then scroll down to the Delete option.
The only way to batch-delete these receipts would be to log into QuickBooks Online in a browser on a computer, then go to the Banking tab. Select the Receipts section, then choose the Receipts you want to delete by clicking in their respective checkbox, then click on Batch actions and Delete selected.
If you have any other questions, feel free to reach out here.
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