refactor: modify process battery_stats to process foundation

Signed-off-by: Nyangziyong <nsyangziyong@huawei.com>

services/etc/group

@@ -88,7 +88,6 @@ quickfixserver:x:5524;
 samgr:x:5555:
 update:x:6666:
 charger:x:6667:
-battery_stats:x:6668:
 sensor:x:6688:
 input:x:6696:
 msdp:x:6699:

services/etc/passwd

@@ -85,7 +85,6 @@ samgr:x:5555:5555:::/bin/false
 dbms:x:6000:6000:::/bin/false
 update:x:6666:6666:::/bin/false
 charger:x:6667:6667:::/bin/false
-battery_stats:x:6668:6668:::/bin/false
 sensor:x:6688:6688:::/bin/false
 input:x:6696:6696:::/bin/false
 msdp:x:6699:6699:::/bin/false