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 daad86e..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,31 +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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"
-