I updated the forum from 3.3.2 to 3.3.4 and after all files were successfully updated I deleted by mistake the install directory from within phpbb directory.
The forum appears to work correctly even as is, so my question is – should I restore the phpbb/install directory from a phpbb fresh package, or should I just leave it deleted and forget about it ?
(I am not speaking about the install director from the forum's root, which I know it should not exist)