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

gearbox/pbr/models/w_suit.mdl/w_suit.mat

@@ -0,0 +1,16 @@
+
+{
+"for" "#models/w_suit/vast_padding.mdl"
+//"basecolor_map" "vast_padding.png"
+//"normal_map" "vast_padding_normal.png"
+//"metal_map" "vast_padding_metal.png"
+//"roughness_map" "vast_padding_roughness.png"
+}
+
+{
+"for" "#models/w_suit/vest.mdl"
+//"basecolor_map" "vest.png"
+//"normal_map" "vest_normal.png"
+//"metal_map" "vest_metal.png"
+//"roughness_map" "vest_roughness.png"
+}