chore: removed unecessary step

Signed-off-by: Vitor Mattos <1079143+vitormattos@users.noreply.github.com>

Author: vitormattos

README.md

@@ -23,9 +23,8 @@ The LibreSign 3rdparty repository has a different structure compared to Nextclou
    - This automatically runs PHP-Scoper via post-install-cmd script
    - Scoped dependencies are generated in `composer/` directory
 6. Run `git clean -X -d -f`
-7. Run `composer dump-autoload`
-8. Commit all changes onto a new branch
-9. You might need the following command for pushing if used as submodule: `git push git@github.com:libresign/3rdparty.git branchname`
+7. Commit all changes onto a new branch
+8. You might need the following command for pushing if used as submodule: `git push git@github.com:libresign/3rdparty.git branchname`
 
 ## PHP-Scoper Integration