Utils, all: Standardize on QtcSettings

Change-Id: Id222016f15b1c3bfe6710fe5d0297666d4565ef1
Reviewed-by: Marcus Tillmanns <marcus.tillmanns@qt.io>

src/plugins/debugger/breakhandler.cpp

@@ -2709,7 +2709,7 @@ void BreakpointManager::executeDeleteAllBreakpointsDialog()
                                         Tr::tr("Remove All Breakpoints"),
                                         Tr::tr("Are you sure you want to remove all breakpoints "
                                                "from all files in the current session?"),
-                                        QString("RemoveAllBreakpoints"));
+                                        Key("RemoveAllBreakpoints"));
     if (pressed != QMessageBox::Yes)
         return;