tests: cleanup the basic structure of integration tests.

tests/bats/dfc.bats

@@ -5,30 +5,18 @@
 
 load common
 
-setup_file() {
-    aa_setup
-}
-
-# bats test_tags=dfc
 @test "dfc: Display filesystems and their disk usage in human-readable form with colors and graphs" {
     dfc
-    aa_check
 }
 
-# bats test_tags=dfc
 @test "dfc: Display all filesystems including pseudo, duplicate and inaccessible filesystems" {
     dfc -a
-    aa_check
 }
 
-# bats test_tags=dfc
 @test "dfc: Display filesystems without color" {
     dfc -c never
-    aa_check
 }
 
-# bats test_tags=dfc
 @test "dfc: Display filesystems containing "ext" in the filesystem type" {
     dfc -t ext
-    aa_check
 }