Remove ClassMetadataFactoryCompiler and other legacy cleanups

Author: nicolas-grekas

CHANGELOG.md

@@ -7,6 +7,7 @@ CHANGELOG
  * Change default value of `default_protocol` option in `UrlType` from `'http'` to `null`
  * Remove the `VersionAwareTest` trait, use feature detection instead
  * Remove deprecated `ResizeFormListener::preSetData()` method, use `postSetData()` instead
+ * Remove `validation.xml` in `Resources/config`, replaced by attributes on the `Form` class
 
 7.4
 ---

Resources/config/validation.xml

@@ -44,7 +44,8 @@
         "symfony/var-dumper": "^7.4|^8.0"
     },
     "conflict": {
-        "symfony/translation-contracts": "<2.5"
+        "symfony/translation-contracts": "<2.5",
+        "symfony/validator": "<7.4"
     },
     "autoload": {
         "psr-4": { "Symfony\\Component\\Form\\": "" },