Un-exclude Stan diagnostics related to StrictData

We specifically want to test this diagnostic, so we need it to fire.

Author: keithfancher

plugins/hls-stan-plugin/test/testdata/.stan.toml

@@ -1,10 +1,5 @@
 # See https://github.com/kowainik/stan/issues/531
 # Unix
-[[check]]
-type = "Exclude"
-id = "STAN-0206"
-scope = "all"
-
 [[check]]
 type = "Exclude"
 id = "STAN-0103"
@@ -16,11 +11,6 @@ id = "STAN-0212"
 directory = "dir/"
 
 # Windows
-[[check]]
-type = "Exclude"
-id = "STAN-0206"
-scope = "all"
-
 [[check]]
 type = "Exclude"
 id = "STAN-0103"

plugins/hls-stan-plugin/test/testdata/dir/configTest.hs

@@ -1,5 +1,3 @@
-data A = A Int Int
-
 a = length [1..]
 
 b = undefined