rm missing load_path warning; better: dev tests for interface implementation

Author: ablaom

src/metadata_utils.jl

@@ -65,9 +65,6 @@ function _extend!(program::Expr, trait::Symbol, value, T)
     end
 end
 
-const WARN_MISSING_LOAD_PATH = "No `load_path` defined. "
-
-
 """
     metadata_model(`T`; args...)
 
@@ -114,8 +111,6 @@ function metadata_model(
     human_name::Union{Nothing,String}=nothing
 )
 
-    load_path === nothing && @warn WARN_MISSING_LOAD_PATH
-
     program = quote end
 
     # Note: Naively using metaprogramming to roll up the following

test/metadata_utils.jl

@@ -21,11 +21,6 @@ setfull()
 M.implemented_methods(::FI, M::Type{<:MLJType}) =
     getfield.(methodswith(M), :name)
 
-@test_logs(
-    (:warn, MLJModelInterface.WARN_MISSING_LOAD_PATH),
-    metadata_model(BarGoo)
-)
-
 metadata_model(FooRegressor,
                input_scitype=Table(Continuous),
                target_scitype=AbstractVector{Continuous},