Unneeded warning for 'Create new db', please move to Debug level.

[mjonss]

For each test case a new database is created, and a new warning is given on stdout, which is just confusing.

WARN[0000] Create new db&{0 0xc000010330 0 {0 0} [0xc000096990] map[] 0 1 0xc0000bad20 false map[0xc000096990:map[0xc000096990:true]] map[] 0 0 0 0 <nil> 0 0 0 0 0x48a560} 

Please remove it or change it to log.Debug.