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 16c7f35..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