Revert "lib/modules: Throw better error when definitions assign to an option set"

This reverts commit 15c873b486.

This was causing infinite recursion when depending on nested options

lib/tests/modules.sh

@@ -199,9 +199,6 @@ checkConfigOutput "true" config.conditionalWorks ./declare-attrsOf.nix ./attrsOf
 checkConfigOutput "false" config.conditionalWorks ./declare-lazyAttrsOf.nix ./attrsOf-conditional-check.nix
 checkConfigOutput "empty" config.value.foo ./declare-lazyAttrsOf.nix ./attrsOf-conditional-check.nix
 
-# Check error for when an option set is defined to be a non-attribute set value
-checkConfigError 'The option path .* is an attribute set of options, but it is defined to not be an attribute set in' \
-  config.value ./declare-option-set.nix ./define-value-int-zero.nix
 
 # Even with multiple assignments, a type error should be thrown if any of them aren't valid
 checkConfigError 'The option value .* in .* is not of type .*' \

lib/tests/modules/declare-option-set.nix

@@ -1,3 +0,0 @@
-{
-  options.value = {};
-}