remove combined {models,sprites}.mat, remove extra .mdl .spr exts

valve/pbr/models/floater.mdl/floater.mat

@@ -0,0 +1,32 @@
+
+{
+"for" "#models/floater/botside.mdl"
+//"basecolor_map" "botside.png"
+//"normal_map" "botside_normal.png"
+//"metal_map" "botside_metal.png"
+//"roughness_map" "botside_roughness.png"
+}
+
+{
+"for" "#models/floater/midside.mdl"
+//"basecolor_map" "midside.png"
+//"normal_map" "midside_normal.png"
+//"metal_map" "midside_metal.png"
+//"roughness_map" "midside_roughness.png"
+}
+
+{
+"for" "#models/floater/peashooter.mdl"
+//"basecolor_map" "peashooter.png"
+//"normal_map" "peashooter_normal.png"
+//"metal_map" "peashooter_metal.png"
+//"roughness_map" "peashooter_roughness.png"
+}
+
+{
+"for" "#models/floater/topside.mdl"
+//"basecolor_map" "topside.png"
+//"normal_map" "topside_normal.png"
+//"metal_map" "topside_metal.png"
+//"roughness_map" "topside_roughness.png"
+}