chore: MinimalApp, use default for deconstructor

src/lib/deskflow/App.cpp

@@ -212,10 +212,6 @@ MinimalApp::MinimalApp() : App(nullptr, new deskflow::ArgsBase())
   setEvents(m_events);
 }
 
-MinimalApp::~MinimalApp()
-{
-}
-
 int MinimalApp::standardStartup(int argc, char **argv)
 {
   return 0;

src/lib/deskflow/App.h

@@ -126,7 +126,7 @@ class MinimalApp : public App
 {
 public:
   MinimalApp();
-  ~MinimalApp() override;
+  ~MinimalApp() override = default;
 
   // IApp overrides
   int standardStartup(int argc, char **argv) override;