Remove automerge stuff

We will be using GitHub native automerge feature.
We also need to remove some webhook events.
The ones we still need are: pull_request closed and pull_request labeled

For python/core-workflow#498
and #PyConUS #PyConUSChallenge

miss_islington/__main__.py

@@ -12,10 +12,10 @@
 from sentry_sdk.integrations.aiohttp import AioHttpIntegration
 
 
-from . import backport_pr, check_run, delete_branch, status_change
+from . import backport_pr, delete_branch
 
 router = routing.Router(
-    backport_pr.router, delete_branch.router, status_change.router, check_run.router
+    backport_pr.router, delete_branch.router
 )
 
 cache = cachetools.LRUCache(maxsize=500)

miss_islington/util.py

@@ -3,9 +3,6 @@
 
 import gidgethub
 
-from .status_change import AUTOMERGE_TRAILER
-
-AUTOMERGE_LABEL = ":robot: automerge"
 
 
 async def comment_on_pr(gh, issue_number, message):
@@ -83,93 +80,3 @@ def normalize_title(title, body):
         # Being paranoid in case \r\n is used.
         return title[:-1] + body[1:].partition("\r\n")[0]
 
-
-def normalize_message(body):
-    """Normalize the message body to make it commit-worthy.
-
-    Mostly this just means removing HTML comments, but also removes unwanted
-    leading or trailing whitespace.
-
-    Returns the normalized body.
-    """
-    # Remove issue mentions added by Bedevere.
-    # This should catch both current gh- and legacy bpo- messages.
-    body = re.sub(r"(?s)<!-- (gh-)?issue-number:.*/\1issue-number -->", "", body)
-    # Remove other HTML comments
-    while "<!--" in body:
-        body = body[: body.index("<!--")] + body[body.index("-->") + 3 :]
-    # Delete BPO links on their own line, probably added by an old version of Bedevere.
-    body = re.sub(r"\nhttps://bugs.python.org/issue(\d+)\n", "", body)
-    # Strip additional newlines between commit body and automerge label.
-    body_parts = body.split(AUTOMERGE_TRAILER)
-    if len(body_parts) > 1:
-        body, automerge_user = body_parts
-        body = f"{body.strip()}\n\n{AUTOMERGE_TRAILER}{automerge_user}"
-    return "\n\n" + body.strip()
-
-
-# Copied over from https://github.com/python/bedevere
-async def is_core_dev(gh, username):
-    """Check if the user is a CPython core developer."""
-    org_teams = "/orgs/python/teams"
-    team_name = "python core"
-    async for team in gh.getiter(org_teams):
-        if team["name"].lower() == team_name:  # pragma: no branch
-            break
-    else:
-        raise ValueError(f"{team_name!r} not found at {org_teams!r}")
-    # The 'teams' object only provides a URL to a deprecated endpoint,
-    # so manually construct the URL to the non-deprecated team membership
-    # endpoint.
-    membership_url = f"/teams/{team['id']}/memberships/{username}"
-    try:
-        await gh.getitem(membership_url)
-    except gidgethub.BadRequest as exc:
-        if exc.status_code == 404:
-            return False
-        raise
-    else:
-        return True
-
-
-def pr_is_awaiting_merge(pr_labels):
-    label_names = [label["name"] for label in pr_labels]
-    if (
-        "DO-NOT-MERGE" not in label_names
-        and "awaiting merge" in label_names
-        and "CLA not signed" not in label_names
-    ):
-        return True
-    return False
-
-
-def pr_is_automerge(pr_labels):
-    for label in pr_labels:
-        if label["name"] == AUTOMERGE_LABEL:
-            return True
-    return False
-
-
-async def get_pr_for_commit(gh, sha):
-    prs_for_commit = await gh.getitem(
-        f"/search/issues?q=type:pr+repo:python/cpython+sha:{sha}"
-    )
-    if prs_for_commit["total_count"] > 0:  # there should only be one
-        pr_for_commit = prs_for_commit["items"][0]
-        return pr_for_commit
-    return None
-
-
-async def remove_automerge(gh, pr_data):
-    """Remove the automerge label"""
-    await gh.delete(
-        f"{pr_data['issue_url']}/labels/{AUTOMERGE_LABEL}",
-        accept="application/vnd.github.symmetra-preview+json",
-    )
-
-
-async def get_check_runs_for_sha(gh, sha):
-    return await gh.getitem(
-        f"/repos/python/cpython/commits/{sha}/check-runs",
-        accept="application/vnd.github.antiope-preview+json",
-    )