Cleanup some dead code

[sunxd3]

No description provided.

[github-actions]

BridgeStan not found at location specified by $BRIDGESTAN environment variable, downloading version 2.5.0 to /home/runner/.bridgestan/bridgestan-2.5.0
Done!
Model dogs produces error: ErrorException("log_density() failed with exception: Exception: bernoulli_lpmf: Probability parameter is inf, but must be in the interval [0, 1] (in '/home/runner/work/JuliaBUGS.jl/JuliaBUGS.jl/benchmark/stan/bugs_examples/vol1/dogs/dogs.stan', line 37, column 6 to line 38, column 62)\n")

Model	Parameter Count	Data Count	Stan Density Time (µs)	Stan Density Gradient Time (µs)	JuliaBUGS Density Time with Graph Walk (µs)	JuliaBUGS Density Gradient Time with ReverseDiff.jl(compiled tape) (µs)
rats	65	150	5.5264	8.20867	66.344	91.992
pumps	12	10	1.00186	1.33957	14.0415	6.32925
dogs	2	720	NA	NA	177.592	158.416
seeds	26	21	2.44958	3.07011	29.144	19.256
surgical_realistic	14	12	1.25452	1.61361	15.279	8.663
magnesium	108	96	10.4545	12.0575	123.881	73.567
salm	22	18	2.37108	3.0347	22.101	13.1545
equiv	15	20	2.59482	3.4815	19.767	15.208
dyes	9	30	1.00531	1.34527	12.1975	13.395
stacks	6	21	1.1325	1.66311	17.853	14.928
epil	303	236	32.971	38.402	296.47	245.424
blockers	47	44	3.20367	3.6455	61.565	30.146
oxford	244	240	16.351	19.086	361.962	203.951
lsat	1006	5000	175.948	217.506	2057.62	1251.38
bones	33	422	72.205	90.238	428.031	188.593
mice	20	65	7.35625	9.41767	27.572	38.972
kidney	64	58	10.71	16.17	67.356	76.213
leuk	18	714	20.398	26.74	208.294	196.928
leukfr	40	714	23.955	31.9	227.235	240.956

[coveralls]

Pull Request Test Coverage Report for Build 12081739528

Details

• 4 of 5 (80.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.02%) to 71.885%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/model.jl	4	5	80.0%

Totals
Change from base Build 11953015266:	-0.02%
Covered Lines:	1396
Relevant Lines:	1942

---

💛 - Coveralls