Plotting of heatmap colorbar in Plots.jl

I have the following code:

using Plots

pyplot()
heatmap(1:2, 1:2, eye(2), colorbar=false)
plotly()
heatmap(1:2, 1:2, eye(2), colorbar=false)

Under pyplot colorbar is not drawn (as expected). However, I am unable to disable it under plotly.
Is there any way to remove colorbar with plotly backend?