tests: cleanup the basic structure of integration tests.

tests/bats/snap.bats

@@ -5,48 +5,30 @@
 
 load common
 
-setup_file() {
-    aa_setup
-}
-
-# bats test_tags=snap
 @test "snap: Search for a package" {
     snap find vim
-    aa_check
 }
 
-# bats test_tags=snap
 @test "snap: Install a package" {
     sudo snap install nano-strict
-    aa_check
 }
 
-# bats test_tags=snap
 @test "snap: Update a package to another channel (track, risk, or branch)" {
     sudo snap refresh nano-strict --channel=edge
-    aa_check
 }
 
-# bats test_tags=snap
 @test "snap: Update all packages" {
     sudo snap refresh
-    aa_check
 }
 
-# bats test_tags=snap
 @test "snap: Display basic information about installed snap software" {
     sudo snap list
-    aa_check
 }
 
-# bats test_tags=snap
 @test "snap: Check for recent snap changes in the system" {
     sudo snap changes
-    aa_check
 }
 
-# bats test_tags=snap
 @test "snap: Uninstall a package" {
     sudo snap remove nano-strict
-    aa_check
 }