Allow muting query-server logs

[such]

There's is currently no way to mute logs such as:
I[12-04|17:13:42.837] HTTPJSONRPC module=query-server method=query args="[1337:0xDB69EEC8F3d9E77fea02A1678700f612936eF6Cb 0x054272926886bF04a367A80E1caD38C18884b7DE <[]uint8 Value> <vm.VMType Value>]" returns="[<[]uint8 Value> <error Value>]"

It would be great if we could.
The log does not also seem very useful. Information might be missing.