How to save Plots.jl with pgfplotsx() without dimensions and other properties?

Plots.jl saves pgfplotsx() figures like this:

...
width={150.4mm}, height={99.6mm},
xlabel style={...},
ylabel style={...},
...

How do I prevent these properties from being written to the file?

Well, maybe it’s possible to save it with relative dimensions like 0.5\linewidth?