chore: unix/ArchTimeUnix, use default for constructor and deconstructor

src/lib/arch/unix/ArchTimeUnix.cpp

@@ -22,16 +22,6 @@
 // ArchTimeUnix
 //
 
-ArchTimeUnix::ArchTimeUnix()
-{
-  // do nothing
-}
-
-ArchTimeUnix::~ArchTimeUnix()
-{
-  // do nothing
-}
-
 double ArchTimeUnix::time()
 {
   struct timeval t;

src/lib/arch/unix/ArchTimeUnix.h

@@ -15,8 +15,8 @@
 class ArchTimeUnix : public IArchTime
 {
 public:
-  ArchTimeUnix();
-  ~ArchTimeUnix() override;
+  ArchTimeUnix() = default;
+  ~ArchTimeUnix() override = default;
 
   // IArchTime overrides
   double time() override;