Delete .travis.yml

Removing Travis CI as ASF Infra has decided to move away from Travis.
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 83e9879..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,30 +0,0 @@
-#
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements.  See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership.  The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License.  You may obtain a copy of the License at
-#
-#   http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied.  See the License for the
-# specific language governing permissions and limitations
-# under the License.
-#
-language: java
-sudo: false
-jdk:
-- openjdk8
-install: true
-script: "./travis.sh"
-env:
-  global:
-    - BUILD_SNAPSHOTS_BRANCH=develop
-    - ARTIFACTORY_URL=https://mifos.jfrog.io/mifos
-    - ARTIFACTORY_USER=travis-ci
-    - secure: "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"