vmray: skipping deref param type void_ptr/ptr

for internal sample 7263937 getting a lot of debug output like

```
DEBUG:capa.features.extractors.vmray.call:skipping deref param type void_ptr
...
DEBUG:capa.features.extractors.vmray.call:skipping deref param type ptr
```

potentially something to enhance down the road

Start with the VMRay call extractor and its capa.features.extractors.vmray.call debug messages, then reproduce the output using internal sample 7263937. Determine the intended handling for void_ptr and ptr dereference parameters; done should include the agreed behavior and verification that the repetitive debug messages are addressed.

Written by the indexing model from the issue text.