Yes, you can deactivate the virtual goals from the Pro plan onwards. To do this, go to the General settings and Crowd & Funding > Funding goals. There you will find a switch for the "Fibonacci sequence".
The virtual goals are automatically switched as further levels based on the Fibonacci sequence in addition to the goals you have set yourself as soon as you have reached your highest goal. You cannot set these levels yourself. They continue to run in the background until the end of your funding phase. The Fibonacci sequence is activated by default.
These are the automatic virtual targets according to Fibonacci: