Simplify

Author: javiereguiluz

frontend/encore/installation.rst

@@ -21,13 +21,6 @@ Then, install Encore into your project with Yarn:
 
     If you are using Flex for your project, you can initialize your project for Encore via:
 
-    .. code-block:: terminal
-
-        $ composer require encore
-        $ yarn install
-        
-    Else, if you are not using flex
-    
     .. code-block:: terminal
 
         $ composer require symfony/webpack-encore-pack