chore: remove todo in places where its done or just a note

src/lib/arch/Arch.h

@@ -5,7 +5,7 @@
  * SPDX-License-Identifier: GPL-2.0-only WITH LicenseRef-OpenSSL-Exception
  */
 
-// TODO: consider whether or not to use either encapsulation (as below)
+// Consider whether or not to use either encapsulation (as below)
 // or inheritance (as it is now) for the ARCH stuff.
 //
 // case for encapsulation:

src/lib/gui/MainWindow.cpp

@@ -729,7 +729,6 @@ void MainWindow::setIcon()
 {
   // Using a theme icon that is packed in exe renders an invisible icon
   // Instead use the resource path of the packed icon
-  // TODO Report to Qt ref the bug here
   const bool symbolicIcon = Settings::value(Settings::Gui::SymbolicTrayIcon).toBool();
 #ifndef Q_OS_MAC
   QString iconString = QStringLiteral(":/icons/deskflow-%1/apps/64/deskflow").arg(iconMode());