On master this will work:
julia> using Plots; funcs=[sin,cos,sinh,cosh];
julia> p = plot(funcs,-6,6,link=:both,layout=4,title=reshape(map(string,funcs),1,4),leg=false)
julia> for i=1:2; plot!(p[i],xformatter=_->""); plot!(p[2i],yformatter=_->""); end; p
I set the formatter to always return an empty string, so that the ticks will still be there (so the grid lines will be drawn). If you don’t care about the grid, you can also set xticks=nothing.