tests: cleanup the basic structure of integration tests.

tests/bats/who.bats

@@ -5,25 +5,15 @@
 
 load common
 
-setup_file() {
-    aa_setup
-}
-
-# bats test_tags=who
 @test "who: Display the username, line, and time of all currently logged-in sessions" {
     who
-    aa_check
 }
 
-# bats test_tags=who
 @test "who: Display all available information" {
     who -a
-    aa_check
 }
 
-# bats test_tags=who
 @test "who: Display all available information with table headers" {
     who -a -H
-    aa_check
 }