Fix torch models so they render correctly in model[]

reported by @OgelGames

Author: sfan5

mods/default/models/torch_ceiling.obj

@@ -1,7 +1,5 @@
 # Blender v2.77 (sub 0) OBJ File: 'torch_ceiling.blend'
 # www.blender.org
-mtllib torch_ceiling.mtl
-o Cube_Cube.001
 v -0.062469 -0.047331 0.068152
 v -0.062469 -0.559515 -0.164388
 v -0.062469 0.004344 -0.045667
@@ -45,14 +43,11 @@ vn -0.0000 -0.4134 0.9105
 vn -1.0000 0.0000 0.0000
 vn 0.7071 0.0000 -0.7071
 vn 0.7071 0.0000 0.7071
-usemtl Material.001
-s off
 f 3/1/1 1/2/1 5/3/1 7/4/1
 f 8/5/1 4/6/1 2/7/1 6/8/1
 f 3/9/2 4/6/2 8/5/2 7/10/2
 f 1/11/3 3/9/3 4/6/3 2/12/3
 f 5/13/2 1/11/2 2/12/2 6/14/2
 f 7/10/3 8/5/3 6/14/3 5/13/3
-usemtl Material.002
 f 9/15/4 10/16/4 12/17/4 11/18/4
 f 13/19/5 14/20/5 16/21/5 15/22/5

mods/default/models/torch_floor.obj

@@ -1,7 +1,5 @@
 # Blender v2.76 (sub 11) OBJ File: 'torch_floor.blend'
 # www.blender.org
-mtllib torch_floor.mtl
-o Cube_Cube.001
 v 0.062500 0.062500 -0.062500
 v 0.062500 -0.500000 -0.062500
 v 0.062500 0.062500 0.062500
@@ -35,16 +33,11 @@ vn 0.000000 0.000000 -1.000000
 vn 1.000000 0.000000 0.000000
 vn -0.707100 0.000000 -0.707100
 vn -0.707100 -0.000000 0.707100
-g Cube_Cube.001_Cube_Cube.001_Material.001
-usemtl Material.001
-s off
 f 3/1/1 1/2/1 5/3/1 7/4/1
 f 8/5/1 4/6/1 2/7/1 6/8/1
 f 3/2/2 4/6/2 8/5/2 7/3/2
 f 1/3/3 3/2/3 4/6/3 2/5/3
 f 5/2/2 1/3/2 2/5/2 6/6/2
 f 7/3/3 8/5/3 6/6/3 5/2/3
-g Cube_Cube.001_Cube_Cube.001_Material.002
-usemtl Material.002
 f 9/9/4 10/10/4 12/11/4 11/12/4
 f 13/12/5 14/9/5 16/10/5 15/11/5

mods/default/models/torch_wall.obj

@@ -1,7 +1,5 @@
 # Blender v2.76 (sub 11) OBJ File: 'torch_wall.blend'
 # www.blender.org
-mtllib torch_wall.mtl
-o Cube_Cube.001
 v 0.062469 -0.195248 0.023570
 v 0.062469 -0.476498 -0.463570
 v 0.062469 -0.303502 0.086070
@@ -47,9 +45,6 @@ vn -0.707100 0.612400 -0.353600
 vn -0.707100 -0.612400 0.353600
 vn -0.707100 0.707100 -0.000000
 vn -0.707100 -0.707100 -0.000000
-g Cube_Cube.001_Cube_Cube.001_Material.001
-usemtl Material.001
-s off
 f 3/1/1 1/2/1 5/3/1 7/4/1
 f 8/5/1 4/6/1 2/7/1 6/8/1
 f 3/2/2 4/6/2 8/5/2 7/3/2
@@ -58,7 +53,5 @@ f 5/2/2 1/3/2 2/5/2 6/6/2
 f 7/3/3 8/5/3 6/6/3 5/2/3
 f 17/9/4 18/10/4 20/11/4 19/12/4
 f 21/9/5 22/10/5 24/11/5 23/12/5
-g Cube_Cube.001_Cube_Cube.001_Material.002
-usemtl Material.002
 f 9/12/6 10/13/6 12/14/6 11/9/6
 f 13/9/7 14/12/7 16/13/7 15/14/7