Delete "ghost" old(*) files that have been mysteriously added back during the SVN...

Delete "ghost" old(*) files that have been mysteriously added back during the SVN-to-Git transition.

To check that these changes are correct, checkout in a directory (let's call it "ros_svn") the /trunk/reactos/ of our read-only SVN repo r76032 and in /trunk/reactos/modules/, the rosapps, rostests and wallpapers.
In a second directory (let's call it "ros_git"), clone the corresponding Git-converted ReactOS directory.
Before applying this patch (and the previous one that added back the empty directories), you should see additional files in ros_git that are not in ros_svn, corresponding to these files I'm deleting here (plus some .gitignore files),
and you should also see additional files in ros_svn that do not appear in ros_git: these are the empty directories I've restored in my previous patch.

Now, after the application of both the previous patch that restores the empty directories (and deletes the .gitignore files), and this patch that removes the ghost files, you should only see that the only differences
between ros_git and ros_svn are the extra .keep files in the empty directories, and that's all!

Command-line for the tests:
diff --strip-trailing-cr -r ros_svn ros_git > diff_svn2git.txt

"-r" means recursive, and "--strip-trailing-cr" ignores the CR-LF vs. LF (or CR) EOLs.

(*): by "ghost" old(*) files I understand files that existed previously in the far past, that then were deleted long ago in SVN, and that popped out back during the Git migration.