remove unknown assets

Signed-off-by: Jan Hanca <[email protected]>

Gems/WarehouseAutomation/Assets/Factory/ConveyorLine/Textures/BaseColor.png

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Gems/WarehouseAutomation/Assets/Factory/ConveyorLine/Textures/Metallic.png

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Gems/WarehouseAutomation/Assets/Factory/ConveyorLine/Textures/Normal.png

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Gems/WarehouseAutomation/Assets/Factory/ConveyorLine/Textures/Roughness.png

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Gems/WarehouseAutomation/Assets/Factory/ConveyorLine/Textures/Specular.png

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