How to print tibble without row.names / row numbers

Tibbles print with row numbers as row names. See 1, 2 in the left margin below:

tibble::as_tibble(mtcars)

# A tibble: 32 x 11
     mpg   cyl  disp    hp  drat    wt  qsec    vs    am  gear  carb
   <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl>
 1  21       6  160    110  3.9   2.62  16.5     0     1     4     4
 2  21       6  160    110  3.9   2.88  17.0     0     1     4     4

Can I suppress those numbers from printing, in an argument to tibble:::print.tbl() or otherwise? I know I can use the row.names = FALSE argument in print.data.frame: print.data.frame(as_tibble(mtcars), row.names = FALSE) but then I don't get all the other nice printing options of it being a tibble, it just prints like a regular data.frame.

I'd like to keep the output the same as in print.tbl() - like what's above, here - but without row numbers.

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