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

bshift/pbr/models/bm_shell.mdl/bm_shell.mat

@@ -0,0 +1,48 @@
+
+{
+"for" "#models/bm_shell/aliengeneric3.mdl"
+//"basecolor_map" "aliengeneric3.png"
+//"normal_map" "aliengeneric3_normal.png"
+//"metal_map" "aliengeneric3_metal.png"
+//"roughness_map" "aliengeneric3_roughness.png"
+}
+
+{
+"for" "#models/bm_shell/crown.mdl"
+//"basecolor_map" "crown.png"
+//"normal_map" "crown_normal.png"
+//"metal_map" "crown_metal.png"
+//"roughness_map" "crown_roughness.png"
+}
+
+{
+"for" "#models/bm_shell/crown2.mdl"
+//"basecolor_map" "crown2.png"
+//"normal_map" "crown2_normal.png"
+//"metal_map" "crown2_metal.png"
+//"roughness_map" "crown2_roughness.png"
+}
+
+{
+"for" "#models/bm_shell/leg1.mdl"
+//"basecolor_map" "leg1.png"
+//"normal_map" "leg1_normal.png"
+//"metal_map" "leg1_metal.png"
+//"roughness_map" "leg1_roughness.png"
+}
+
+{
+"for" "#models/bm_shell/sid1.mdl"
+//"basecolor_map" "sid1.png"
+//"normal_map" "sid1_normal.png"
+//"metal_map" "sid1_metal.png"
+//"roughness_map" "sid1_roughness.png"
+}
+
+{
+"for" "#models/bm_shell/top1.mdl"
+//"basecolor_map" "top1.png"
+//"normal_map" "top1_normal.png"
+//"metal_map" "top1_metal.png"
+//"roughness_map" "top1_roughness.png"
+}