Remove the Jenkinsfile for demo purposes

Jenkinsfile

@@ -1,27 +0,0 @@
-#!/usr/bin/env groovy
-
-pipeline {
-    agent { label 'docker' }
-    stages {
-        stage('Prepare') {
-            steps {
-                sh 'make depends'
-            }
-        }
-        stage('Test') {
-            steps {
-                sh 'make check'
-            }
-            post {
-                always {
-                    archiveArtifacts 'rspec.html'
-                }
-            }
-        }
-        stage('Build container') {
-            steps {
-                sh 'make container'
-            }
-        }
-    }
-}