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

bshift/pbr/models/w_battery.mdl/w_battery.mat

@@ -0,0 +1,40 @@
+
+{
+"for" "#models/w_battery/batcontact.mdl"
+//"basecolor_map" "batcontact.png"
+//"normal_map" "batcontact_normal.png"
+//"metal_map" "batcontact_metal.png"
+//"roughness_map" "batcontact_roughness.png"
+}
+
+{
+"for" "#models/w_battery/batpanel.mdl"
+//"basecolor_map" "batpanel.png"
+//"normal_map" "batpanel_normal.png"
+//"metal_map" "batpanel_metal.png"
+//"roughness_map" "batpanel_roughness.png"
+}
+
+{
+"for" "#models/w_battery/batside.mdl"
+//"basecolor_map" "batside.png"
+//"normal_map" "batside_normal.png"
+//"metal_map" "batside_metal.png"
+//"roughness_map" "batside_roughness.png"
+}
+
+{
+"for" "#models/w_battery/battop.mdl"
+//"basecolor_map" "battop.png"
+//"normal_map" "battop_normal.png"
+//"metal_map" "battop_metal.png"
+//"roughness_map" "battop_roughness.png"
+}
+
+{
+"for" "#models/w_battery/grey.mdl"
+//"basecolor_map" "grey.png"
+//"normal_map" "grey_normal.png"
+//"metal_map" "grey_metal.png"
+//"roughness_map" "grey_roughness.png"
+}