Meta/CI: Remove IRC notifications

With the increased volume of PRs being opened and merged lately,
multiple people have complained that the IRC is absolutely flooded with
SerenityBot posts. Remove the IRC notifications from the CI scripts, and
the Meta script that handles parsing the github actions context into
an IRC message.

.github/workflows/cmake.yml

@@ -238,33 +238,3 @@ jobs:
         ASAN_OPTIONS: "strict_string_checks=1:check_initialization_order=1:strict_init_order=1"
         UBSAN_OPTIONS: "print_stacktrace=1:print_summary=1:halt_on_error=1"
       if: ${{ matrix.with-fuzzers == 'NO_FUZZ' }}
-
-  notify_irc:
-    needs: [build_and_test_serenity, build_and_test_lagom]
-    runs-on: ubuntu-20.04
-    if: always() && github.repository == 'SerenityOS/serenity' && (github.event_name == 'pull_request' || (github.event_name == 'push' && github.ref == 'refs/heads/master'))
-
-    steps:
-    - uses: actions/checkout@v2
-    # Sets environment variable env.WORKFLOW_CONCLUSION to one of [neutral, success, skipped, cancelled, timed_out, action_required, failure]
-    # depending on result of all needs jobs
-    - uses: technote-space/workflow-conclusion-action@v2
-
-    # === NOTIFICATIONS ===
-
-    - name: Dump event info
-      if: always()
-      # Usually unnecessary, but insanely useful if IRC notifications fail.
-      run: |
-        cat <<"EOF"
-        ${{ toJSON(github.event) }}
-        ${{ toJSON(needs) }}
-        EOF
-    - name: Generate IRC message
-      if: always()
-      run: |
-        ${{ github.workspace }}/Meta/notify_irc.py <<"EOF"
-        ["${{ github.actor }}", ${{ github.run_id }}, "${{ env.WORKFLOW_CONCLUSION }}",
-        ${{ toJSON(github.event) }}
-        ]
-        EOF

Meta/notify_irc.py

@@ -1,117 +0,0 @@
-#!/usr/bin/env python3
-
-import json
-import sys
-import requests
-
-# Must be exactly three lines each!
-# No trailing newline! (I.e. keep it as backslash-newline-tripleapostrophe.)
-TEMPLATE_PUSH = '''\
-{commit}{post_commit} (pushed master: {status}) {compare} https://github.com/SerenityOS/serenity/actions/runs/{run_id}\
-'''
-TEMPLATE_PR = '''\
-{title} ({actor} {action}: {status}) {link} https://github.com/SerenityOS/serenity/actions/runs/{run_id}\
-'''
-SERENITY_BOT = 'http://94.130.182.143:8080'
-
-
-def compute_lines(wrapper):
-    actor, run_id, raw_status, event = wrapper
-
-    if raw_status == 'success':
-        status = 'The build passed.'
-    elif raw_status == 'failure':
-        status = 'The build failed.'
-    else:
-        status = 'The build {}(?)'.format(raw_status)
-
-    if 'action' not in event:
-        # This is a push.
-        if 'commits' not in event or not event['commits']:
-            show_msg = '??? (No commits in event?!)'
-            post_commit = ''
-        else:
-            commits = event['commits']
-            show_commit = commits[-1]['message']
-            if 'skip ci' in show_commit or 'ci skip' in show_commit:
-                print('User requested to skip IRC notification. Okay!')
-                return False
-            # First line of the last commit:
-            show_msg = show_commit.split('\n')[0]
-            if len(commits) == 1:
-                post_commit = ''
-            elif len(commits) == 2:
-                post_commit = ' (+1 commit)'
-            else:
-                post_commit = ' (+{} commits)'.format(len(commits))
-        return TEMPLATE_PUSH.format(
-            actor=actor,
-            status=status,
-            run_id=run_id,
-            commit=show_msg,
-            post_commit=post_commit,
-            compare=event.get('compare', '???'),
-        )
-    elif 'pull_request' in event:
-        # This is a PR.
-        raw_action = event['action']
-        pull_request = event['pull_request']
-        # actor, until here, is whoever caused the action to run -
-        # if it's a PR we want the author's name in the notification.
-        actor = pull_request['user']['login']
-        if raw_action == 'opened':
-            action = 'opened'
-        elif raw_action == 'reopened':
-            # Reduce spam, don't notify about reopened PRs
-            return False
-        elif raw_action == 'synchronize':
-            # Reduce spam, don't notify about PR updates
-            return False
-        else:
-            action = '{}(?)'.format(raw_action)
-        if pull_request.get('draft', True):
-            print("This is a draft PR, so IRC won't be notified.")
-            print('Note: No rebuild occurs when the PR is "un-drafted"!')
-            return False
-        return TEMPLATE_PR.format(
-            actor=actor,
-            action=action,
-            status=status,
-            run_id=run_id,
-            title=pull_request.get('title', '???'),
-            link=pull_request.get('_links', {}).get('html', {}).get('href', '???'),
-        )
-    else:
-        print('Unrecognized event type?!')
-        return False
-
-
-def send_notification(line):
-    """Send a message to IRC channel via HTTP bridge.
-
-    Ars:
-        line (str): message to send
-    """
-
-    print('> ' + line)
-    try:
-        response = requests.post(SERENITY_BOT, data={'msg': line})
-    except BaseException as e:
-        print('Notification failed: {}: {}'.format(type(e), e))
-    else:
-        print('Notification result: HTTP {}'.format(response.status_code))
-
-
-def run_on(json_string):
-    wrapper = json.loads(json_string)
-    line = compute_lines(wrapper)
-    if line:
-        send_notification(line)
-
-
-def run():
-    run_on(sys.stdin.read())
-
-
-if __name__ == '__main__':
-    run()