We can already specify this in the php.ini

apache2-app.conf

@@ -8,10 +8,6 @@
         Options +FollowSymLinks
         AllowOverride All
         Require all granted
-
-        <IfModule mod_php7.c>
-            php_value memory_limit 64m
-        </IfModule>
     </Directory>
 
 </VirtualHost>