Remove unused moel

ParticleGenerator/res/models/magicalIndex/book.mtl

-# Blender 4.1.1 MTL File: 'book.blend'
-# www.blender.org
-
-newmtl Material.001
-Ns 0.000000
-Ka 1.000000 1.000000 1.000000
-Ks 0.500000 0.500000 0.500000
-Ke 0.000000 0.000000 0.000000
-Ni 1.000000
-d 1.000000
-illum 2
-map_Kd book.png

ParticleGenerator/res/models/magicalIndex/book.obj

-# Blender 4.1.1
-# www.blender.org
-#mtllib book.mtl
-o Cube
-v 1.000000 0.112074 -0.616080
-v 0.996224 -0.133569 -0.617124
-v 1.000000 0.112074 0.616042
-v 1.000000 -0.131600 0.616042
-v -1.000000 0.112074 -0.616080
-v -1.000000 -0.131600 -0.616080
-v -1.000000 0.112074 0.616042
-v -1.000000 -0.131600 0.616042
-vn -0.0000 1.0000 -0.0000
-vn -0.0000 -0.0000 1.0000
-vn -1.0000 -0.0000 -0.0000
-vn -0.0010 -1.0000 -0.0000
-vn 0.9999 -0.0154 -0.0030
-vn -0.0005 -0.0000 -1.0000
-vn -0.0000 -1.0000 0.0016
-vn 1.0000 -0.0000 -0.0000
-vn -0.0000 0.0042 -1.0000
-vt 0.831135 1.000000
-vt -0.000000 0.529971
-vt 0.831135 0.530923
-vt 1.000000 0.530926
-vt 0.833984 1.000000
-vt 0.833984 0.530926
-vt 0.831135 0.060894
-vt -0.000000 -0.000000
-vt 0.831135 0.000000
-vt -0.002323 0.061432
-vt 0.833457 0.529434
-vt 0.002328 0.530506
-vt 0.831135 0.060945
-vt 0.000000 0.060894
-vt 1.000000 0.060896
-vt 0.831055 0.530029
-vt 0.831055 0.060896
-vt -0.000000 1.000000
-vt 1.000000 1.000000
-vt 0.828807 0.060360
-vt 1.000000 0.530029
-s 0
-usemtl Material.001
-f 5/1/1 3/2/1 1/3/1
-f 3/4/2 8/5/2 4/6/2
-f 7/7/3 6/8/3 8/9/3
-f 2/10/4 8/11/4 6/12/4
-f 1/8/5 4/13/5 2/14/5
-f 5/15/6 2/16/6 6/17/6
-f 5/1/1 7/18/1 3/2/1
-f 3/4/2 7/19/2 8/5/2
-f 7/7/3 5/14/3 6/8/3
-f 2/10/7 4/20/7 8/11/7
-f 1/8/8 3/9/8 4/13/8
-f 5/15/9 1/21/9 2/16/9