[hotfix] Remove unused walkthrough dists build script

The new docs no longer has a walkthrough page, so this build script can
now be removed.
diff --git a/tools/docs/create_python_walkthrough.sh b/tools/docs/create_python_walkthrough.sh
deleted file mode 100755
index 1d20dee..0000000
--- a/tools/docs/create_python_walkthrough.sh
+++ /dev/null
@@ -1,57 +0,0 @@
-#!/bin/sh
-#
-# 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.
-
-# fail immediately
-set -o errexit
-set -o nounset
-
-CURR_DIR=`pwd`
-BASE_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )"
-PROJECT_ROOT="${BASE_DIR}/../../"
-
-# Sanity check to ensure that resolved paths are valid; a LICENSE file should aways exist in project root
-if [ ! -f ${PROJECT_ROOT}/LICENSE ]; then
-    echo "Project root path ${PROJECT_ROOT} is not valid; script may be in the wrong directory."
-    exit 1
-fi
-
-###########################
-
-rm -rf ${PROJECT_ROOT}/docs/downloads/walkthrough.zip
-
-cd ${BASE_DIR}
-
-rm -rf statefun-walkthrough
-cp -r ${PROJECT_ROOT}/statefun-examples/statefun-python-greeter-example statefun-walkthrough
-
-rm statefun-walkthrough/build-example.sh
-
-rm statefun-walkthrough/greeter/greeter.py
-cp greeter.py statefun-walkthrough/greeter/greeter.py
-
-rm statefun-walkthrough/README.md
-
-sed '/apache_flink_statefun/d' statefun-walkthrough/greeter/Dockerfile > Dockerfile
-mv Dockerfile statefun-walkthrough/greeter/Dockerfile
-
-zip -r walkthrough.zip statefun-walkthrough
-rm -rf statefun-walkthrough
-
-mkdir -p ${PROJECT_ROOT}/docs/downloads/
-mv walkthrough.zip ${PROJECT_ROOT}/docs/downloads/walkthrough.zip
-
-cd ${CURR_DIR}
diff --git a/tools/docs/greeter.py b/tools/docs/greeter.py
deleted file mode 100644
index daf5240..0000000
--- a/tools/docs/greeter.py
+++ /dev/null
@@ -1,53 +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.
-################################################################################
-from messages_pb2 import SeenCount, GreetRequest, GreetResponse
-
-from statefun import StatefulFunctions
-from statefun import RequestReplyHandler
-from statefun import kafka_egress_record
-
-functions = StatefulFunctions()
-
-
-@functions.bind("example/greeter")
-def greet(context, message):
-    pass
-
-handler = RequestReplyHandler(functions)
-
-#
-# Serve the endpoint
-#
-
-from flask import request
-from flask import make_response
-from flask import Flask
-
-app = Flask(__name__)
-
-
-@app.route('/statefun', methods=['POST'])
-def handle():
-    response_data = handler(request.data)
-    response = make_response(response_data)
-    response.headers.set('Content-Type', 'application/octet-stream')
-    return response
-
-
-if __name__ == "__main__":
-    app.run()
\ No newline at end of file