Outated lock files now trigger an error requesting removal rather than being ignored silently

tests/Composer/Test/Fixtures/installer/update-alias-lock.test

@@ -29,20 +29,6 @@ Update aliased package does not mess up the lock file
     },
     "minimum-stability": "dev"
 }
---LOCK--
-{
-    "_": "outdated lock file, should not have to be loaded in an update",
-    "packages": [
-        { "package": "a/a", "version": "dev-master", "source-reference": "1234" },
-        { "package": "a/a", "version": "dev-master", "alias-pretty-version": "1.0.x-dev", "alias-version": "1.0.9999999.9999999-dev" }
-    ],
-    "packages-dev": [],
-    "aliases": [],
-    "minimum-stability": "dev",
-    "stability-flags": [],
-    "prefer-stable": false,
-    "prefer-lowest": false
-}
 --INSTALLED--
 [
     {