minor #17220 Remove annotations from constraint examples added in 6.1 (wouterj)

This PR was merged into the 6.1 branch.

Discussion
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Remove annotations from constraint examples added in 6.1

Commits
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a82cc31 Remove annotations from constraint examples added in 6.1

Author: wouterj

reference/constraints/ExpressionSyntax.rst

@@ -28,28 +28,6 @@ The following constraints ensure that:
 
 .. configuration-block::
 
-    .. code-block:: php-annotations
-
-        // src/Entity/Order.php
-        namespace App\Entity;
-
-        use Symfony\Component\Validator\Constraints as Assert;
-
-        class Order
-        {
-            /**
-             * @Assert\ExpressionSyntax
-             */
-            protected $promotion;
-
-            /**
-             * @Assert\ExpressionSyntax(
-             *     allowedVariables={"user", "shipping_centers"}
-             * )
-             */
-            protected $shippingOptions;
-        }
-
     .. code-block:: php-attributes
 
         // src/Entity/Order.php

reference/constraints/Unique.rst

@@ -109,21 +109,6 @@ collection::
 
 .. configuration-block::
 
-    .. code-block:: php-annotations
-
-        // src/Entity/Poi.php
-        namespace App\Entity;
-
-        use Symfony\Component\Validator\Constraints as Assert;
-
-        class Poi
-        {
-            /**
-             * @Assert\Unique(fields={"latitude", "longitude"})
-             */
-            protected $coordinates;
-        }
-
     .. code-block:: php-attributes
 
         // src/Entity/Poi.php