Location data is sent by default to the default search engine and there's no way to disable that unless you deny location permissions from the OS to Chrome. If you want to use a map and give permission only to that (Bing maps for example) you have to allow Chrome to gather location data which will also be sent to the default search engine (usually Google). There's only the illusion of choice there (you can change the default search engine and send location data somewhere else though).