Remove the apparmor-folks test case

Folks test cases are not so relevant anymore.

The apparmor-folks test case has not been executed for several releases
already (it was not executed for 18.12 and for 18.09 was only executed
for half the platforms with some failures too).

This commit removes the apparmor-folks test case.

Signed-off-by: Luis Araujo <luis.araujo@collabora.co.uk>

test-cases/apparmor-folks.yaml

-metadata:
-  name: apparmor-folks
-  format: "Apertis Test Definition 1.0"
-  image-types:
-    minimal: [ armhf-internal, armhf, arm64, amd64 ]
-    target:  [ armhf-internal, amd64 ]
-    sdk:     [ amd64 ]
-  image-deployment:
-    - APT
-  type: functional
-  exec-type: automated
-  priority: medium
-  maintainer: "Apertis Project"
-  description: "Test that AppArmor profiles provided in Folks package work
-                without unexpected auditd log entries."
-
-  expected:
-    - "A list of executed test with related result (as pass/fail/skip) will be
-       shown on console, similar to the following:"
-    - |
-        >R1.13b_folks-alias-persistence.expected: pass
-        R1.13b_folks-eds-compatibility.expected: pass
-        R1.13b_folks-metacontacts-linking.expected: pass
-        R1.13b_folks-metacontacts-unlinking.expected: pass
-        R1.13b_folks-libsocialweb.expected: pass
-        R6.4.2_folks-metacontacts-antilinking.expected: pass
-        R1.13b_folks-retrieve-contacts-telepathy.expected: pass
-        test-malicious.expected: pass
-
-  notes:
-    - "Other output on the console such as warnings and errors should be ignored
-       if the test passes"
-    - "This TC is based on other Folks test cases, all of them should PASS in
-       order to execute them against AppArmor."
-    - "If a subtest for this TC FAILs, check that the related test is PASSING."
-    - "It is worth to investigate AppArmor-side only if the original TC PASSes and
-       the profiled version of it FAILs."
-    - "Any other scenario is either OK or worth waiting the original TC to PASS."
-
-install:
-  deps:
-    - apparmor
-    - apparmor-profiles
-    - busybox
-    - chaiwala-apparmor-profiles
-    - apertis-tests-apparmor-report
-    - chaiwala-tests
-    - evolution-data-server
-    - folks-tools
-    - syncevolution
-    - python3
-    - telepathy-mission-control-5
-    - telepathy-gabble
-    - libfolks-eds25
-    - libfolks-telepathy25
-  git-repos:
-    - url: https://gitlab.apertis.org/infrastructure/apertis-tests.git
-      branch: 'apertis/v2019dev0'
-
-run:
-  steps:
-    - "# Enter test directory:"
-    - cd apertis-tests
-    - "# Execute the following commands:"
-    - echo -n | sudo tee /var/log/audit/audit.log
-    - common/run-test-in-systemd --name=run-test-folks --timeout=300 apparmor/folks/test-folks
-    - sudo cat /var/log/audit/audit.log | aa_log_extract_tokens.pl PERMITTING REJECTING
-
-parse:
-  pattern: ^(?P<test_case_id>.+)\.expected:\s*(?P<result>PASS|pass|FAIL|fail|SKIP|skip|UNKNOWN|unknown)$