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 da6bfb0..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,33 +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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"
-after_failure:
-  - ./gradlew rat
-  - cat api/build/reports/rat/rat-report.txt