What is the value in doing this? The buttons are for actions that you can take on a selected row item, and the filters help you narrow down the rows that you see. Why would you only allow the user to filter but not to perform any action on the filtered results?
You can pass non persistable object to your page that contains bool variable, example of the name could be ActionButtonsHidden. By default it should be false.
When you click Procurar change ActionButtonsHidden to true.
Then set proper condition for your button’s visibility :
have tried with “conditional visibility” option of that buttons?