frontend: Don't mark OBSHotkeyEdit as read-only on macOS

Recent styling changes mean read-only QLineEdits no longer visually take
focus. There are better ways to remove the input cursor, and if we do
that that should probably be all operating systems anyways.

frontend/settings/OBSHotkeyEdit.hpp

@@ -43,11 +43,6 @@ public:
 		  original(original),
 		  settings(settings)
 	{
-#ifdef __APPLE__
-		// disable the input cursor on OSX, focus should be clear
-		// enough with the default focus frame
-		setReadOnly(true);
-#endif
 		setAttribute(Qt::WA_InputMethodEnabled, false);
 		setAttribute(Qt::WA_MacShowFocusRect, true);
 		InitSignalHandler();
@@ -55,11 +50,6 @@ public:
 	}
 	OBSHotkeyEdit(QWidget *parent = nullptr) : QLineEdit(parent), original({}), settings(nullptr)
 	{
-#ifdef __APPLE__
-		// disable the input cursor on OSX, focus should be clear
-		// enough with the default focus frame
-		setReadOnly(true);
-#endif
 		setAttribute(Qt::WA_InputMethodEnabled, false);
 		setAttribute(Qt::WA_MacShowFocusRect, true);
 		InitSignalHandler();