remove tools/github_stats.py (#14612)

Also remove unused assets and utils.

docs/source/coredev/index.rst

@@ -116,21 +116,6 If a major release:
     - move the contents of ``development.rst`` to ``versionX.rst`` where ``X`` is
       the numerical release version
 
-    - generate summary of GitHub contributions, which can be done with::
-
-          python tools/github_stats.py --milestone $MILESTONE > stats.rst
-
-      which may need some manual cleanup of ``stats.rst``. Add the cleaned
-      ``stats.rst`` results to ``docs/source/whatsnew/github-stats-X.rst``
-      where ``X`` is the numerical release version (don't forget to add it to
-      the git repository as well). If creating a major release, make a new
-      ``github-stats-X.rst`` file; if creating a minor release, the content
-      from ``stats.rst`` may simply be added to the top of an existing
-      ``github-stats-X.rst`` file.
-
-    - Edit ``docs/source/whatsnew/index.rst`` to list the new ``github-stats-X``
-      file you just created.
-
     - You do not need to temporarily remove the first entry called
       ``development``, nor re-add it after the release, it will automatically be
       hidden when releasing a stable version of IPython (if ``_version_extra``

tools/release_helper.sh

@@ -90,28 +90,6 then
     read
 fi
 
-# if ask_section "Gen Stats, and authors"
-# then
-# 
-#     echo
-#     echo $BLUE"here are all the authors that contributed to this release:"$NOR
-#     git log --format="%aN <%aE>" $PREV_RELEASE... | sort -u -f
-# 
-#     echo
-#     echo $BLUE"If you see any duplicates cancel (Ctrl-C), then edit .mailmap."
-#     echo $GREEN"Press enter to continue:"$NOR
-#     read
-# 
-#     echo $BLUE"generating stats"$NOR
-#     python tools/github_stats.py --milestone $MILESTONE > stats.rst
-# 
-#     echo $BLUE"stats.rst files generated."$NOR
-#     echo $GREEN"Please merge it with the right file (github-stats-X.rst) and commit."$NOR
-#     echo $GREEN"press enter to continue."$NOR
-#     read
-# 
-# fi
-
 # if ask_section "Generate API difference (using frapuccino)"
 # then
 #     echo $BLUE"Checking out $PREV_RELEASE"$NOR