fix plot with updated NodeInfo; remove tikzpicture option (#212)

last refactor of the `compiler_passes` modified the definition of
`NodeInfo`, but plotting code is not updated.
This PR fix that. 

Also given `TikzGraphs` are less maintained, dependency on it is
removed.

I would like to spend more time on the plotting in near future, but for
now, this should be a quick fix.

---------

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Project.toml

@@ -1,6 +1,6 @@
 name = "JuliaBUGS"
 uuid = "ba9fb4c0-828e-4473-b6a1-cd2560fee5bf"
-version = "0.6"
+version = "0.6.1"
 
 [deps]
 AbstractMCMC = "80f14c24-f653-4e6a-9b94-39d6b0f70001"
@@ -32,15 +32,13 @@ GLMakie = "e9467ef8-e4e7-5192-8a1a-b1aee30e663a"
 GraphMakie = "1ecd5474-83a3-4783-bb4f-06765db800d2"
 GraphPlot = "a2cc645c-3eea-5389-862e-a155d0052231"
 MCMCChains = "c7f686f2-ff18-58e9-bc7b-31028e88f75d"
-TikzGraphs = "b4f28e30-c73f-5eaf-a395-8a9db949a742"
 
 [extensions]
 JuliaBUGSAdvancedHMCExt = ["AdvancedHMC", "MCMCChains"]
 JuliaBUGSAdvancedMHExt = ["AdvancedMH", "MCMCChains"]
 JuliaBUGSGraphMakieExt = ["GraphMakie", "GLMakie"]
 JuliaBUGSGraphPlotExt = ["GraphPlot"]
 JuliaBUGSMCMCChainsExt = ["MCMCChains"]
-JuliaBUGSTikzGraphsExt = ["TikzGraphs"]
 
 [compat]
 AbstractMCMC = "5"
@@ -69,7 +67,6 @@ PDMats = "0.10, 0.11"
 SpecialFunctions = "2"
 StaticArrays = "1.9"
 Statistics = "1.9"
-TikzGraphs = "1"
 julia = "1.9"
 
 [extras]