How can I delete an entire blank 1099-B form that shows all zeros?

In TurboTax Online, follow these steps to remove an investment sale transaction.

• Down the left side of the screen, click on Federal.
• Down the left side of the screen, click on Wages & Income.
• Scroll down to Investments and Savings and click the down arrow to the right.
• Click Start / Revisit to the right of Stocks, Cryptocurrency, Mutual Funds, Bonds, Other.
• At the screen Let's finish pulling in your investment income, click the down arrow to the right of the 1099-B investment.
• The Edit and delete trashcan become visible.
• To edit or delete an individual line with the IRS form 1099-B entry, select Edit.  Individual lines become available.  
•      Bulk Edit may be available by clicking the box to the left of the line.
•      The pencil icon is used for editing the line.
•      The trashcan delete icon is used to remove that line.

The Edit button and trashcan are in the lower left hand corner of the screen.