Switch internal tests to point to public smoke tests

Related: RHELMISC-10640

gating.yaml

@@ -5,3 +5,4 @@ decision_contexts:
   - osci_compose_gate
 rules:
   - !PassingTestCaseRule {test_case_name: osci.brew-build./plans/javapackages.functional}
+  - !PassingTestCaseRule {test_case_name: osci.brew-build./plans/smoke.functional}

plans/smoke.fmf

@@ -0,0 +1,9 @@
+summary: Basic smoke test
+discover:
+  how: fmf
+  url: https://gitlab.com/redhat/centos-stream/tests/postgresql-jdbc.git
+execute:
+  how: tmt
+prepare:
+  - how: install
+    package: java-21-openjdk-headless

plans/tier1-internal.fmf

@@ -1,11 +0,0 @@
-summary: Internal Tier1 tests plan
-discover:
-    how: fmf
-    filter: 'tier: 1'
-    url: https://pkgs.devel.redhat.com/git/tests/postgresql-jdbc
-execute:
-    how: tmt
-adjust:
-    enabled: false
-    when: distro == centos-stream or distro == fedora
-