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

valve/pbr/models/p_tripmine.mdl/p_tripmine.mat

@@ -0,0 +1,40 @@
+
+{
+"for" "#models/p_tripmine/box.mdl"
+//"basecolor_map" "box.png"
+//"normal_map" "box_normal.png"
+//"metal_map" "box_metal.png"
+//"roughness_map" "box_roughness.png"
+}
+
+{
+"for" "#models/p_tripmine/face.mdl"
+//"basecolor_map" "face.png"
+//"normal_map" "face_normal.png"
+//"metal_map" "face_metal.png"
+//"roughness_map" "face_roughness.png"
+}
+
+{
+"for" "#models/p_tripmine/lensCHROME.mdl"
+//"basecolor_map" "lensCHROME.png"
+//"normal_map" "lensCHROME_normal.png"
+//"metal_map" "lensCHROME_metal.png"
+//"roughness_map" "lensCHROME_roughness.png"
+}
+
+{
+"for" "#models/p_tripmine/light.mdl"
+//"basecolor_map" "light.png"
+//"normal_map" "light_normal.png"
+//"metal_map" "light_metal.png"
+//"roughness_map" "light_roughness.png"
+}
+
+{
+"for" "#models/p_tripmine/side.mdl"
+//"basecolor_map" "side.png"
+//"normal_map" "side_normal.png"
+//"metal_map" "side_metal.png"
+//"roughness_map" "side_roughness.png"
+}