Remove plans dir

plans/public.fmf

@@ -1,10 +0,0 @@
-summary: Test plan that runs all tests from libppd tests repo.
-discover:
-  - name: fedora-cups-browsed
-    how: fmf
-    url: https://src.fedoraproject.org/tests/cups-browsed.git
-  - name: fedora-cups-filters
-    how: fmf
-    url: https://src.fedoraproject.org/tests/cups-filters.git
-execute:
-    how: tmt

plans/tier1-internal.fmf

@@ -1,16 +0,0 @@
-summary: CI plan, picks internal Tier1 tests, runs in beakerlib.
-discover:
-  - name: rhel-cups-browsed
-    how: fmf
-    filter: 'tier: 1'
-    url: https://pkgs.devel.redhat.com/git/tests/cups-browsed.git
-  - name: rhel-cups-filters
-    how: fmf
-    filter: 'tier: 1'
-    url: https://pkgs.devel.redhat.com/git/tests/cups-filters.git
-execute:
-    how: tmt
-adjust:
-    enabled: false
-    when: distro == centos-stream, fedora
-    because: They don't have access to internal repos.