Remove assertionPassed fast path from the capture interface

As it is an internal helper for RunContext to speed-up handling of
succesfull assertions, I have no idea why it was added to the
interface back when it was first implemented.

src/catch2/internal/catch_run_context.hpp

@@ -108,7 +108,7 @@ namespace Catch {
 
         bool lastAssertionPassed() override;
 
-        void assertionPassed() override;
+        void assertionPassed();
 
     public:
         // !TBD We need to do this another way!