Default: Remove normalmap textures

mods/default/textures/default_brick_normal.png

mods/default/textures/default_cactus_side_normal.png

mods/default/textures/default_cactus_top_normal.png

mods/default/textures/default_cobble_normal.png

mods/default/textures/default_desert_sand_normal.png

mods/default/textures/default_desert_stone_brick_normal.png

mods/default/textures/default_desert_stone_normal.png

mods/default/textures/default_dirt_normal.png

mods/default/textures/default_dry_grass_normal.png

mods/default/textures/default_dry_grass_side_normal.png

mods/default/textures/default_grass_normal.png

mods/default/textures/default_grass_side_normal.png

mods/default/textures/default_jungletree_normal.png

mods/default/textures/default_jungletree_top_normal.png

mods/default/textures/default_junglewood_normal.png

mods/default/textures/default_mineral_coal_normal.png

mods/default/textures/default_mineral_copper_normal.png

mods/default/textures/default_mineral_diamond_normal.png

mods/default/textures/default_mineral_gold_normal.png

mods/default/textures/default_mineral_iron_normal.png