removed unecessary and improper imports.

Author: YongchaoHuang

src/model_utils.jl

@@ -1,8 +1,5 @@
 ### Yong ############################################################## 
 # Yong added the below new functions on 2023-07-04, they are doing the some functionalities as Tor's functions. Some redundancy needs to be removed?
-# using Turing, Distributions, DynamicPPL, MCMCChains, Random, Test
-using Distributions, Random, Test
-
 #### 1. varname_in_chain ####
 # here we just check if vn and its leaves are present in the chain; we are not checking its presence in model. So we don't need to pass model or varinfo to this function.
 """

test/model_utils.jl

@@ -1,6 +1,3 @@
-using Turing, Distributions, DynamicPPL, MCMCChains, Random, Test
-Random.seed!(111)
-
 #### prepare the models and chains for testing ####
 # (1) manually create a chain using MCMCChains - we know what parameter names are in the chain
 val = [1 2; 3 4; 5 6; 7 8; 9 10; 11 12; 13 14; 15 16; 17 18; 19 20]