extensions: Remove modelines

We already include an .editorconfig that is supported by many
editors, including emacs, so no need to repeat an emacs-specific
modeline in every source file.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell-extensions/-/merge_requests/353>

HACKING.md

@@ -26,9 +26,6 @@ need in gnome-shell.
 Generally, we follow [GJS coding style][coding-style], which in short is:
 indent 4 spaces, no tabs, space after comma, no space after function call.
 
-The Emacs mode line for this
-/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
-
 Imports should be at the top, in two groups, one for standard
 imports (like imports.lang or imports.dbus) and introspection,
 the other for Shell API. Within the same group, put everything

extensions/apps-menu/extension.js

@@ -5,7 +5,6 @@
 //
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
 import Atk from 'gi://Atk';
 import Clutter from 'gi://Clutter';
 import Gio from 'gi://Gio';

extensions/auto-move-windows/extension.js

@@ -4,9 +4,6 @@
 //
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-// -*- mode: js2; indent-tabs-mode: nil; js2-basic-offset: 4 -*-
-// Start apps on custom workspaces
-
 import Shell from 'gi://Shell';
 
 import {Extension} from 'resource:///org/gnome/shell/extensions/extension.js';

extensions/auto-move-windows/prefs.js

@@ -3,9 +3,6 @@
 //
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-// -*- mode: js2; indent-tabs-mode: nil; js2-basic-offset: 4 -*-
-// Start apps on custom workspaces
-
 import Adw from 'gi://Adw';
 import Gio from 'gi://Gio';
 import GLib from 'gi://GLib';

extensions/native-window-placement/extension.js

@@ -5,7 +5,6 @@
 //
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-// -*- mode: js2; indent-tabs-mode: nil; js2-basic-offset: 4 -*-
 import Clutter from 'gi://Clutter';
 
 import {Extension, InjectionManager} from 'resource:///org/gnome/shell/extensions/extension.js';

extensions/places-menu/extension.js

@@ -5,7 +5,6 @@
 //
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
 import Clutter from 'gi://Clutter';
 import GObject from 'gi://GObject';
 import St from 'gi://St';

extensions/user-theme/extension.js

@@ -5,9 +5,6 @@
 //
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-// -*- mode: js2; indent-tabs-mode: nil; js2-basic-offset: 4 -*-
-// Load shell theme from ~/.local/share/themes/name/gnome-shell
-
 import Gio from 'gi://Gio';
 
 import {Extension} from 'resource:///org/gnome/shell/extensions/extension.js';

extensions/user-theme/prefs.js

@@ -2,8 +2,6 @@
 //
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-// -*- mode: js2; indent-tabs-mode: nil; js2-basic-offset: 4 -*-
-
 // we use async/await here to not block the mainloop, not to parallelize
 /* eslint-disable no-await-in-loop */
 

extensions/window-list/prefs.js

@@ -3,7 +3,6 @@
 //
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-// -*- mode: js2; indent-tabs-mode: nil; js2-basic-offset: 4 -*-
 import Adw from 'gi://Adw';
 import Gio from 'gi://Gio';
 import GLib from 'gi://GLib';

extensions/windowsNavigator/extension.js

@@ -6,7 +6,6 @@
 //
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
 import Clutter from 'gi://Clutter';
 import Graphene from 'gi://Graphene';
 import St from 'gi://St';

extensions/workspace-indicator/prefs.js

@@ -3,7 +3,6 @@
 //
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-// -*- mode: js2; indent-tabs-mode: nil; js2-basic-offset: 4 -*-
 import {ExtensionPreferences} from 'resource:///org/gnome/Shell/Extensions/js/extensions/prefs.js';
 
 import {WorkspacesPage} from './workspacePrefs.js';

extensions/workspace-indicator/workspacePrefs.js

@@ -3,7 +3,6 @@
 //
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-// -*- mode: js2; indent-tabs-mode: nil; js2-basic-offset: 4 -*-
 import Adw from 'gi://Adw';
 import Gio from 'gi://Gio';
 import GLib from 'gi://GLib';