Remove windows CI job

Jenkinsfile

@@ -32,28 +32,5 @@ pipeline {
                 }
             }
         }
-
-        stage("Build on Windows") {
-            agent {
-                label 'windows'
-            }
-
-            steps {
-
-                bat 'compile.bat'
-
-                archiveArtifacts artifacts: "cpp\\build\\Debug\\vsleep-cpp.exe", fingerprint: true
-                archiveArtifacts artifacts: "cpp\\build\\Debug\\pause-cpp.exe", fingerprint: true
-
-                archiveArtifacts artifacts: "dart\\out\\*.exe", fingerprint: true
-
-            }
-
-            post {
-                always {
-                    deleteDir()
-                }
-            }
-        }
     }
 }