Add assert for profile obj keys and remove redundant assert.
Add assert for profile obj keys and remove redundant assert.

nyurik/kartotherian,nyurik/tilelive-vector,kartotherian/kartotherian,kartotherian/kartotherian,jaredbrookswhite/tilelive-vector,mapbox/tilelive-vector,kartotherian/kartotherian,nyurik/kartotherian,nyurik/kartotherian,nyurik/kartotherian,kartotherian/kartotherian