Merge pull request #25252 from gursimarsingh:cpp_samples_cleanup

Move API focused C++ samples to snippets #25252

Clean Samples #25006
This PR removes 39 outdated C++ samples from the project, as part of an effort to keep the codebase clean and focused on current best practices.

samples/cpp/videowriter_basic.cpp

@@ -64,4 +64,4 @@ int main(int, char**)
     }
     // the videofile will be closed and released automatically in VideoWriter destructor
     return 0;
-}
+}