Remove extra semi colon from kineto/libkineto/src/SampleListener.h

Summary:
`-Wextra-semi` or `-Wextra-semi-stmt`

If the code compiles, this is safe to land.

Reviewed By: palmje

Differential Revision: D51995102

fbshipit-source-id: 55cd4456a94376b77d79f3e477c2ce9faa1e6646

libkineto/src/SampleListener.h

@@ -139,7 +139,7 @@ class SampleListener {
   SampleListener(const SampleListener&) = delete;
   SampleListener& operator=(const SampleListener&) = delete;
 
-  virtual ~SampleListener(){};
+  virtual ~SampleListener(){}
 
   // Report bucketed & aggregated values for event
   virtual void handleSample(int device, const Sample& sample, bool from_new_version) = 0;