removing 2019 cni dropgz test

Author: rjdenney

.pipelines/pipeline.yaml

@@ -172,11 +172,6 @@ stages:
               name: cni-dropgz
               os: windows
               os_version: ltsc2019
-            cni_dropgz_test_windows2019_amd64:
-              arch: amd64
-              name: cni-dropgz-test
-              os: windows
-              os_version: ltsc2019
             cni_dropgz_windows2022_amd64:
               arch: amd64
               name: cni-dropgz
@@ -300,7 +295,7 @@ stages:
               platforms: linux/amd64 linux/arm64 windows/amd64
             cni_dropgz_test:
               name: cni-dropgz-test
-              os_versions: ltsc2019 ltsc2022
+              os_versions: ltsc2022
               platforms: linux/amd64 linux/arm64 windows/amd64
             cns:
               name: cns