Debugging variable causes downstream error in PGFPlotsX.jl

[Holbormon]

Hi,

As pointed out in KristofferC/PGFPlotsX.jl#325, the debugging values seemingly introduced by this line of GraphRecipes.jl somehow end up in the final LaTeX code generated by Plots.jl through the PGFPlotsX.jl backend.

This leads to tex compiling errors and ultimately REPL errors when displaying the result of graphplot().

Saving the figure generated by graphplot() works, and only after getting rid of "num edges nodes" in the resulting .tex is pdflatex able to render the figure properly.