FUCS Improvement - remove Fedora URLs

- Remove unused tests pointing to old Fedora URL to improve FUCS
- Use valid gating tests instead

ci.fmf

@@ -1,11 +0,0 @@
-summary: Tier tests
-discover:
-    how: fmf
-    # using temporary location before the test is merged
-    #repository: git://pkgs.devel.redhat.com/tests/micropipenv
-    #ref: master
-    repository: https://src.fedoraproject.org/forks/hhorak/tests/postgresql.git
-    ref: add-libecpg
-    filter: 'tag:libecpg'
-execute:
-    how: tmt

gating.yaml

@@ -3,4 +3,4 @@ product_versions:
   - rhel-9
 decision_context: osci_compose_gate
 rules:
-  - !PassingTestCaseRule {test_case_name: osci.brew-build.tier0.functional}
+  - !PassingTestCaseRule {test_case_name: osci.brew-build./plans/tier1-internal.functional}

plans/tier1-internal.fmf

@@ -0,0 +1,7 @@
+summary: CentOS gating plan
+discover:
+    how: fmf
+    url: https://pkgs.devel.redhat.com/git/tests/libecpg
+    test: /Sanity/libecpg
+execute:
+    how: tmt