I have imported data in excel and it has taken twice in my data of quickbooks, kindly suggest how to remove one data which is uploded

Visit the following reference. Hopefully it works with your country version.

https://quickbooks.intuit.com/learn-support/global/manage-intuit-subscriptions/delete-your-data-and-start-over-in-quickbooks-online/01/382702#M2

Hello there, sales-windshield.

To resolve duplicate data within QuickBooks Online, we'll have to delete them manually. If these are uploaded transactions, let's follow the steps below:

1. Go to Sales on the left menu.
2. Within the Invoices tab, tick all the duplicate transactions next to the Date column.
3. Click the Batch actions drop-down arrow. Then, Delete.
   

If you mean that these are items, we can only make them inactive. Here are the steps to follow: 

1. Go to Sales on the left menu.
2. Select the Product and Services tab.
3. Tick the duplicate items.
4. Click the Batch actions drop-down arrow. Then, select Make inactive.
   

I'm adding an article that contains information on how you can manage sales transactions and expenses: 

• Manage Customers and income.
• Manage Suppliers and Expenses. 

Let me know if you have other questions or referring to something else. Take care and stay safe always!