Useless field assignment in `query_handler.go`

[xiemaisi]

Describe the bug

It looks like this assignment to aqlRequest.Verbose is dead (the field is never read in the same function, and aqlRequest is not a pointer).

To Reproduce

I found this issue using static analysis, so I cannot provide reproduction steps. I imagine one possible outcome of this could be that this if condition never holds,

[hasitpbhatt]

Maybe it was done just in case someone needs to use aqlRequest.Verbose later in the same function. Not sure, though.

@shz117, can you help us out here?