tests: cleanup the basic structure of integration tests.

tests/bats/systemd-sysusers.bats

@@ -5,24 +5,14 @@
 
 load common
 
-setup_file() {
-    aa_setup
-}
-
-# bats test_tags=systemd-sysusers
 @test "systemd-sysusers: Print the contents of all configuration files (before each file, its name is printed as a comment)" {
     systemd-sysusers --cat-config
-    aa_check
 }
 
-# bats test_tags=systemd-sysusers
 @test "systemd-sysusers: Process configuration files and print what would be done without actually doing anything" {
     systemd-sysusers --dry-run
-    aa_check
 }
 
-# bats test_tags=systemd-sysusers
 @test "systemd-sysusers: Create users and groups from all configuration file" {
     sudo systemd-sysusers
-    aa_check
 }