Update CHANGELOG.md, update release scripts (apache#1807)

CHANGELOG.md

@@ -21,7 +21,6 @@ Changelogs are maintained separately for each subproject. Please check out the
 changelog file within each subproject folder for more details:
 
 * [Datafusion CHANGELOG](./datafusion/CHANGELOG.md)
-* [Datafusion Python Binding CHANGELOG](./python/CHANGELOG.md)
 * [Ballista CHANGELOG](./ballista/CHANGELOG.md)
 
 For older versions, see [apache/arrow/CHANGELOG.md](https://github.com/apache/arrow/blob/master/CHANGELOG.md).

dev/release/README.md

@@ -21,7 +21,7 @@
 
 ## Sub-projects
 
-The Datafusion repo contains 3 different releasable sub-projects: Datafusion, Ballista and Datafusion python binding.
+The Datafusion repo contains 2 different releasable sub-projects: Datafusion, Ballista
 
 We use Datafusion release to drive the release for the other sub-projects. As a
 result, Datafusion version bump is required for every release while version
@@ -64,7 +64,7 @@ The CHANGELOG is managed automatically using
 This script creates a changelog using github PRs and issues based on the labels
 associated with them.
 
-## Prepare release comimts and PR
+## Prepare release commits and PR
 
 Prepare a PR to update `CHANGELOG.md` and versions to reflect the planned
 release.

dev/release/update_change_log-all.sh

@@ -28,4 +28,3 @@ SOURCE_TOP_DIR="$(cd "${SOURCE_DIR}/../../" && pwd)"
 
 ${SOURCE_DIR}/update_change_log-datafusion.sh
 ${SOURCE_DIR}/update_change_log-ballista.sh
-${SOURCE_DIR}/update_change_log-python.sh

dev/release/update_change_log.sh

@@ -50,14 +50,14 @@ OUTPUT_PATH="${PROJECT}/CHANGELOG.md"
 pushd ${SOURCE_TOP_DIR}
 
 # reset content in changelog
-git co "${SINCE_TAG}" "${OUTPUT_PATH}"
+git checkout "${SINCE_TAG}" "${OUTPUT_PATH}"
 # remove license header so github-changelog-generator has a clean base to append
-sed -i '1,18d' "${OUTPUT_PATH}"
+sed -i.bak '1,18d' "${OUTPUT_PATH}"
 
 docker run -it --rm \
     -e CHANGELOG_GITHUB_TOKEN=$CHANGELOG_GITHUB_TOKEN \
     -v "$(pwd)":/usr/local/src/your-app \
-    githubchangeloggenerator/github-changelog-generator:1.16.2 \
+    githubchangeloggenerator/github-changelog-generator \
     --user apache \
     --project arrow-datafusion \
     --since-tag "${SINCE_TAG}" \
@@ -66,7 +66,7 @@ docker run -it --rm \
     --output "${OUTPUT_PATH}" \
     "$@"
 
-sed -i "s/\\\n/\n\n/" "${OUTPUT_PATH}"
+sed -i.bak "s/\\\n/\n\n/" "${OUTPUT_PATH}"
 
 echo '<!---
   Licensed to the Apache Software Foundation (ASF) under one