Remove location-related permissions from nearby-core package

[fynngodau]

We should still implement the behavior discussed here: #1707 (comment)

Then CCTG can use upstream's microG builds again (I think).

[Bubu]

Cross-linking back to our issue: https://codeberg.org/corona-contact-tracing-germany/cwa-android/issues/280

[mar-v-in]

@fynngodau @Bubu mind checking if 7667cdd makes sense to you?

[Bubu]

Looks good at first glance. Will hopefully get around to testing this soon.

[ale5000-git]

Quote: https://developer.android.com/guide/topics/connectivity/bluetooth/permissions#discover-local-devices

If you want your app to initiate device discovery or manipulate Bluetooth settings, you must declare the BLUETOOTH_ADMIN permission. Most apps need this permission solely for the ability to discover local Bluetooth devices.
If your app supports a service and can run on Android 10 (API level 29) or Android 11, you must also declare the ACCESS_BACKGROUND_LOCATION permission to discover Bluetooth devices.

To my undertsanding ACCESS_BACKGROUND_LOCATION is still needed if you use BLUETOOTH_ADMIN.
But if the used functions of BLUETOOTH_ADMIN can be replaced by BLUETOOTH_SCAN and you place maxSdkVersion="30" to BLUETOOTH_ADMIN maybe it is fine.

[ale5000-git]

@mar-v-in
@fynngodau
@Bubu

Edit: Moved the code here => #1610 (comment)

[mar-v-in]

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