Utilize context user ID for canAdminGrantSensorsPermissions

Remove, from the system API surface, the canAdminGrantSensorsPermissionsForUser
method, leaving only canAdminGrantSensorsPermissions.

In canAdminGrantSensorsPermissions, get the user ID from the context.

This means callers that need to find out the permission grant state for
a particular user would have to construct a context object for that
user.

Bug: 179690270
Bug: 170627643
Test: DeviceOwnerTest#testDeviceOwnerProvisioning ManagedProvisioningTests:com.android.managedprovisioning.parser.ExtrasProvisioningDataParserTest ManagedProvisioningTests:com.android.managedprovisioning.parser.PropertiesProvisioningDataParserTest ManagedProvisioningTests:com.android.managedprovisioning.model.ProvisioningParamsTest android.devicepolicy.cts.DevicePolicyManagerTest com.android.cts.devicepolicy.MixedDeviceOwnerTest#testAdminControlOverSensorPermissionGrantsDefault com.android.cts.devicepolicy.MixedManagedProfileOwnerTest#testAdminControlOverSensorPermissionGrantsDefault com.android.cts.devicepolicy.DeviceOwnerTest#testAdminControlOverSensorPermissionGrantsDefault com.android.cts.devicepolicy.MixedProfileOwnerTest#testAdminControlOverSensorPermissionGrantsDefault
Change-Id: I118f642c15b3f9848ff97d13e1e32b3bd5dba63d