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In Manager > API Management > API Manager, navigate to the target version and click to display the Version Details page.
Click the plus icon ( ) to display the assets menu.
Select one of the following choices:
Accounts. Click to display the Snap Pack menu from which to make your Account selections.
Snap Pack. Click to display the Snap Pack menu from which to make your Snap Pack selections.
Pipeline. Click to display the Pipeline menu from which to make your Pipeline selections.
Task. Click to display the Task menu from which to make your Task selections.
Complete the required dialogs associated with the type of Asset.
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In Manager > API Management > API Manager, navigate to the target API Version and click it to display the Version Details page.
Click the Assets tab.
Select the assets to delete and click the trash icon ( ).