title: Unable to suppress x-axis label in a plotly violin plot
body: <p>I just installed the latest <code>plotly</code> <code>R</code> <code>package</code> (<code>devtools::install_github("ropensci/plotly")</code>).</p>
  
  <p>I'm trying to generate a violin plot for a single variable and I would like to suppress the x-axis label.</p>
  
  <p>I tried:</p>
  
  <pre><code>library(dplyr)
  library(plotly)
  
  df &lt;- read.csv("https://raw.githubusercontent.com/plotly/datasets/master/violin_data.csv")
  plot_ly(y =~ df$total_bill,type = 'violin',
          box = list(visible = T),
          meanline = list(visible = T)) %&gt;% 
    layout(xaxis = list(title = ""),yaxis = list(title = "Total Bill",zeroline = F))
  </code></pre>
  
  <p>But I'm getting "trace 0" as the x-axis label:
  <a href="https://i.stack.imgur.com/80MdK.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/80MdK.png" alt="enter image description here"></a></p>
  
  <p>I tried playing around with the <code>x0</code> parameter but couldn't get a violin with no x-axis label.</p>
  
  <p>Any idea?</p>