Revert "qt6: Add macOS sandboxing warning"

This reverts commit 8715263c75.

ref: #7803

qutebrowser/app.py

@@ -346,15 +346,6 @@ def _open_special_pages(args):
          True,
          'qute://warning/sessions'),
 
-        ('sandboxing-warning-shown',
-         (
-             hasattr(sys, "frozen") and
-             utils.is_mac and
-             machinery.IS_QT6 and
-             os.environ.get("QTWEBENGINE_DISABLE_SANDBOX") == "1"
-         ),
-         'qute://warning/sandboxing'),
-
         ('qt5-warning-shown',
          (
              machinery.IS_QT5 and

qutebrowser/browser/qutescheme.py

@@ -568,9 +568,6 @@ def qute_warning(url: QUrl) -> _HandlerRet:
                            title='Qt 5.15 sessions warning',
                            datadir=standarddir.data(),
                            sep=os.sep)
-    elif path == '/sandboxing':
-        src = jinja.render('warning-sandboxing.html',
-                           title='Qt 6 macOS sandboxing warning')
     elif path == '/qt5':
         is_venv = hasattr(sys, 'real_prefix') or sys.base_prefix != sys.prefix
         src = jinja.render('warning-qt5.html',

qutebrowser/html/warning-sandboxing.html

@@ -1,16 +0,0 @@
-{% extends "styled.html" %}
-
-{% block content %}
-<h1>{{ title }}</h1>
-<span class="note">Note this warning will only appear once. Use <span class="mono">:open
-qute://warning/sandboxing</span> to show it again at a later time.</span>
-
-<p>
-    Due to a <a href="https://github.com/pyinstaller/pyinstaller/pull/6903">PyInstaller issue</a>,
-    Chromium's <a href="https://chromium.googlesource.com/chromium/src/+/HEAD/docs/design/sandbox_faq.md">sandboxing</a>
-    is currently disabled for macOS builds with Qt 6. This means that there will be no additional layer of protection
-    in case of Chromium security bugs. Thus, it's advised to
-    <b>not use this build in production</b>. Hopefully, this situation will be
-    resolved before the final 3.0.0 release.
-</p>
-{% endblock %}