title: ggrepel remove line around labels
body: <p>How can I remove the line around <code>geom_label_repel</code>. Using <code>label.size = 0</code> appears to have no visible effect. I could set `colour</p>
  
  <pre><code>library(ggplot2)
  library(ggrepel)
  ggplot(mtcars, aes(wt, mpg, color = wt)) +
    geom_point(color = 'red') +
    geom_label_repel(aes(label = rownames(mtcars)), label.size = 0, fill = "white") +
    theme_classic(base_size = 16)
  </code></pre>
  
  <p>Entering a <code>geom_text_repel</code> after a blank <code>geom_label_repel</code> occasionally works, but is not reliable: the boxes may appear in a different location to the text.</p>
  
  <p><a href="https://i.stack.imgur.com/wEGUR.png" rel="noreferrer"><img src="https://i.stack.imgur.com/wEGUR.png" alt="enter image description here"></a></p>