tests: cleanup the basic structure of integration tests.

tests/bats/groupadd.bats

@@ -5,32 +5,20 @@
 
 load common
 
-setup_file() {
-    aa_setup
-}
-
-# bats test_tags=groupadd
 @test "groupadd: Create a new group" {
     sudo groupadd user2
-    aa_check
 }
 
-# bats test_tags=groupadd
 @test "groupadd: Create a new system group" {
     sudo groupadd --system system2
-    aa_check
 }
 
-# bats test_tags=groupadd
 @test "groupadd: Create a new group with the specific groupid" {
     sudo groupadd --gid 3000 user3
-    aa_check
 }
 
-# bats test_tags=groupadd
 @test "groupdel: Delete newly created group" {
     sudo groupdel user2
     sudo groupdel system2
     sudo groupdel user3
-    aa_check
 }