gmod_src: Remove particle loading warning (because we don't ..

Revision 840
Remove particle loading warning (because we don’t care)
Allow mounting of DIPRIPChanged Files:
[ul]
[li]trunk/src_garrysmod/garrysmod/lua_shared/gmod_steam_helpers.cpp[/li][li]trunk/src_garrysmod/particles/particles.cpp[/li][/ul]
Committed By Garry Newman