Plots.jl - Turn off axis and grid lines

Try showaxis = false, as described in the axis attributes documentation.

Here's an example that works for me (in the Plotly backend).

surface(-10:10, -10:10, (x, y) -> x^2 - y^2, showaxis = false)

axis=([], false) should do the trick

You can almost but not quite get rid of them with ticks = false.