minor #19617 [AssetMapper] Deleting duplicated info (ThomasLandauer)

This PR was squashed before being merged into the 6.4 branch.

Discussion
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[AssetMapper] Deleting duplicated info

Page: https://symfony.com/doc/6.4/frontend/asset_mapper.html#deploying-with-the-assetmapper-component

Reason: This is all explained in detail under the **very next** heading.

Commits
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22e3745 [AssetMapper] Deleting duplicated info

Author: javiereguiluz

frontend/asset_mapper.rst

@@ -608,19 +608,15 @@ is being built, which you can ignore.
 Deploying with the AssetMapper Component
 ----------------------------------------
 
-When you're ready to deploy, "compile" your assets during deployment:
+When you're ready to deploy, "compile" your assets:
 
 .. code-block:: terminal
 
     $ php bin/console asset-map:compile
 
-That's it! This will write all your assets into the ``public/assets/`` directory,
-along with a few JSON files so that the ``importmap`` can be rendered lightning fast.
-
-But to make sure your site is performant, be sure that your web server
-(or a proxy) is running HTTP/2, is compressing your assets and setting
-long-lived Expires headers on them. See :ref:`Optimization <optimization>` for
-more details.
+This will write all your versioned asset files into the ``public/assets/`` directory,
+along with a few JSON files: ``manifest.json``, ``importmap.json``, plus one ``entrypoint.<name>.json``
+for each entrypoint.
 
 .. _optimization: