Soft-deprecate ConfigItems instead of expanding it

This undoes the addition of the `validate` parameter from ee84424.
It is OK to do because this was not released yet.

mkdocs/config/config_options.py

@@ -138,16 +138,14 @@ def run_validation(self, value):
 
 class ConfigItems(ListOfItems):
     """
-    Config Items Option
+    Deprecated: Use `ListOfItems(SubConfig(...))` instead of `ConfigItems(...)`.
 
     Validates a list of mappings that all must match the same set of
     options.
     """
 
-    def __init__(
-        self, *config_options: PlainConfigSchemaItem, required: bool = False, validate: bool = False
-    ):
-        super().__init__(SubConfig(*config_options, validate=validate))
+    def __init__(self, *config_options: PlainConfigSchemaItem, required: bool = False):
+        super().__init__(SubConfig(*config_options))
         self.required = required
 
 

mkdocs/tests/config/config_options_tests.py

@@ -1252,6 +1252,8 @@ class Schema:
         conf = self.get_config(Schema, {'option': {'cc': 'foo'}})
         self.assertEqual(conf['option'], {'cc': 'foo'})
 
+
+class ConfigItemsTest(TestCase):
     def test_subconfig_with_multiple_items(self):
         # This had a bug where subsequent items would get merged into the same dict.
         class Schema:
@@ -1270,13 +1272,13 @@ class Schema:
         )
         self.assertEqual(conf['the_items'], [{'value': 'a'}, {'value': 'b'}])
 
-
-class ConfigItemsTest(TestCase):
     def test_optional(self):
         class Schema:
-            sub = c.ConfigItems(
-                ('opt', c.Type(int)),
-                validate=True,
+            sub = c.ListOfItems(
+                c.SubConfig(
+                    ('opt', c.Type(int)),
+                    validate=True,
+                )
             )
 
         conf = self.get_config(Schema, {})
@@ -1295,9 +1297,11 @@ class Schema:
 
     def test_required(self):
         class Schema:
-            sub = c.ConfigItems(
-                ('opt', c.Type(int, required=True)),
-                validate=True,
+            sub = c.ListOfItems(
+                c.SubConfig(
+                    ('opt', c.Type(int, required=True)),
+                    validate=True,
+                )
             )
 
         conf = self.get_config(Schema, {})