unused files/formats

saved ~100mb

addon.json

@@ -10,6 +10,8 @@
 		"*.git*",
 		"*.txt",
 		"*.sw.vtx",
+		"*.dx80.vtx",
+		"*.xbox.vtx",
 		"sprops_ws_icon.jpg",
 		"README.md"
 	]

materials/sprops/trans/wheels/rubberGreen_a.vmt

@@ -1,13 +0,0 @@
-"VertexLitGeneric"
-{
-	"$model" "1"
-	"$basetexture" "sprops/trans/wheels/rubberGreen_a"
-	"$bumpmap" "sprops/trans/wheels/rubberGreen_normal"
-
-	"$blendtintbybasealpha" "1"
-	"$halflambert" 	"1"
-	"$phong"     	"1"
- 	"$phongexponent"  "8"
- 	"$phongboost"   	"0.1"
- 	"$phongfresnelranges"   "[0 .5 1]"
-}