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

src/lib/arch/unix/ArchSleepUnix.cpp

@@ -35,16 +35,6 @@
 // ArchSleepUnix
 //
 
-ArchSleepUnix::ArchSleepUnix()
-{
-  // do nothing
-}
-
-ArchSleepUnix::~ArchSleepUnix()
-{
-  // do nothing
-}
-
 void ArchSleepUnix::sleep(double timeout)
 {
   ARCH->testCancelThread();

src/lib/arch/unix/ArchSleepUnix.h

@@ -15,8 +15,8 @@
 class ArchSleepUnix : public IArchSleep
 {
 public:
-  ArchSleepUnix();
-  ~ArchSleepUnix() override;
+  ArchSleepUnix() = default;
+  ~ArchSleepUnix() override = default;
 
   // IArchSleep overrides
   void sleep(double timeout) override;