Remove comment

com.unity.render-pipelines.high-definition/HDRP/Lighting/Volumetrics/VolumeVoxelization.compute

     voxelCenterUV.z   = clamp(voxelCenterUV.z, offset + clampBorder, offset + _VolumeMaskDimensions.x - clampBorder);
     
     // TODO: expose the LoD bias parameter.
-    // TODO: can we use anisotropic filtering to improve the quality? SampleGrad() doesn't support ddz().
     float maskValue = SAMPLE_TEXTURE3D_LOD(_VolumeMaskAtlas, s_trilinear_clamp_sampler, voxelCenterUV, lod).a;
 
     return maskValue;