How to Disable the "View Data" button on the Data pane and "Export All" function

It is currently not built into the product to be able to hide data sources, but the following possible workarounds exist: 

• Publish the workbook to Tableau Server, and deny permission to view underlying data to relevant users. For more information, see Publish a Workbook in Tableau Help.
• Hide unused fields, and then create an extract. Hidden fields are automatically excluded from the extract. For more information, see Hide or Unhide Fields and Extracting Data in Tableau Help.
• Use an aggregated extract. Aggregating data prevents users from seeing row-level data for aggregated fields. For more information, see Create an extract.