Best answer by Tboy2000
Enable Developer Option and ADB debuging on your phone.
Connect the phone to computer.
Test connection between phone and PC.
Remote shell into the device.
To see installed apps type
$pm list packages
$pm disable-user --user 0 com.huawei.search
Disconnect the phone from PC and reboot phone.
To enable Hi Search again use:
$pm enable --user 0 com.huawei.search
Taken from XDA but in the link below it shows you how to uninstall it. Better to disable it above so you can always put it back if you want.
How to disable Hi Search (XDA)