Removing Trace1 label from subplot

How can the “trace 1” yaxis label on the right hand plot as shown in the attached image be removed?

Actually I managed to fix this, seems it was the name of the trace rather than the axis label and could be updated as follows.

var trace2 = {
    x: coldata,
    type: 'box',
    xaxis: 'x2',
    yaxis: 'y2',
    name: ""

      }  ;