Remove 3D shockwave glow map warning

The warning fired for any 3D shockwave model without a glow map, but it turns out that situation is fine.  Drop the warning along with the cmdline include it required.

Co-Authored-By: Claude Sonnet 5.5 <[email protected]>

code/weapon/shockwave.cpp

@@ -9,7 +9,6 @@
 
 #include "weapon/shockwave.h"
 #include "asteroid/asteroid.h"
-#include "cmdline/cmdline.h"
 #include "gamesnd/gamesnd.h"
 #include "globalincs/linklist.h"
 #include "io/timer.h"
@@ -578,17 +577,6 @@ int shockwave_load(const char *s_name, bool shock_3D)
 			Shockwave_info.pop_back();
 			return -1;
 		}
-
-		// glow maps are only loaded when enabled, so only check then
-		if (Cmdline_glow || Fred_running) {
-			auto pm = model_get(si->model_id);
-			bool has_glow = std::any_of(pm->maps, pm->maps + pm->n_textures, [](const texture_map &tmap) {
-				return tmap.textures[TM_GLOW_TYPE].GetTexture() >= 0;
-			});
-
-			if (!has_glow)
-				Warning(LOCATION, "3D shockwave model '%s' has no glow map.  For a 3D shockwave, the glow texture typically carries the animation.", si->filename);
-		}
 	} else {
 		si->bitmap_id = bm_load_animation( si->filename, &si->num_frames, &si->fps, nullptr, nullptr, true );