remove known bugs as that issue had been resolved

vignettes/teal.Rmd

@@ -110,11 +110,6 @@ so your users can view and configure their reports before downloading them.
 
 To learn more about the `teal` framework we recommend first exploring some of the available analysis modules.
 
-## Known bugs
-
-- It could be needed to use `options(shiny.useragg = FALSE)` to make the `teal::init` apps more stable, [till `ragg` package is not fixed](https://github.com/rstudio/shiny/issues/3704). It is recommended to put this option in the `.Rprofile` file.
-
-
 For example see:
 
 * [general analysis modules](https://insightsengineering.github.io/teal.modules.general/)