Create a text file in your Build/Android/ folder called “PakBlacklist-Shipping” and inside of this, add these 2 rows:
../../../Engine/Content/EngineMaterials/DefaultBloomKernel.uasset
../../../Engine/Content/EngineMaterials/DefaultBloomKernel.uexp
That will work for your shipping build, just copy paste for development build.
Might be worth noting, there is a few other things worth excluding too if you’re not using them, such as:
../../../Engine/Content/EngineDebugMaterials/
../../../Engine/Content/MobileResources/
../../../Engine/Content/Tutorial/
../../../Engine/Content/VREditor/
../../../Engine/Content/ArtTools/
../../../Engine/Content/Maps/
../../../Engine/Content/MapTemplates/
../../../Engine/Content/EngineSounds/
../../../Engine/Content/BasicShapes/
../../../Engine/Content/Animation/
../../../Engine/Plugins/Experimental/ControlRig/
../../../Engine/Content/EngineMaterials/BlueNoise.uasset
../../../Engine/Content/EngineMaterials/BlueNoise.uexp
As seen above, you can either exclude an asset directly, or a whole folder!