Do not run tests with previous go version

Signed-off-by: Julien Pivotto <291750+roidelapluie@users.noreply.github.com>

.github/workflows/ci.yml

@@ -47,23 +47,6 @@ jobs:
         with:
           version: "3.15.8"
 
-  test_go_oldest:
-    name: Go tests with previous Go version
-    runs-on: ubuntu-latest
-    env:
-      # Enforce the Go version.
-      GOTOOLCHAIN: local
-    container:
-      # The go version in this image should be N-1 wrt test_go.
-      image: quay.io/prometheus/golang-builder:1.23-base
-    steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-        with:
-          persist-credentials: false
-      - run: make build
-      # Don't run NPM build; don't run race-detector.
-      - run: make test GO_ONLY=1 test-flags=""
-
   test_ui:
     name: UI tests
     runs-on: ubuntu-latest
@@ -244,7 +227,7 @@ jobs:
   publish_main:
     name: Publish main branch artifacts
     runs-on: ubuntu-latest
-    needs: [test_ui, test_go, test_go_more, test_go_oldest, test_windows, golangci, codeql, build_all]
+    needs: [test_ui, test_go, test_go_more, test_windows, golangci, codeql, build_all]
     if: github.event_name == 'push' && github.event.ref == 'refs/heads/main'
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
@@ -260,7 +243,7 @@ jobs:
   publish_release:
     name: Publish release artefacts
     runs-on: ubuntu-latest
-    needs: [test_ui, test_go, test_go_more, test_go_oldest, test_windows, golangci, codeql, build_all]
+    needs: [test_ui, test_go, test_go_more, test_windows, golangci, codeql, build_all]
     if: |
       (github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v2.'))
       ||