Make a client script and put this into it:
for i = 1, 32 do
Citizen.InvokeNative(0xDC0F817884CDD856, i, false)
while true do
if GetPlayerWantedLevel(PlayerId()) ~= 0 then
Will stop emergency services from dispatching and also disable all wanted levels for all players, just in case.
As for random AI cops spawning near police stations, I don’t think you can easily remove them.