Remove logging encrypted data

[Lagovas]

In one of my previous PRs I didn't remove logging encrypted data*( And @iamnotacake found it when tested eng demo.

We don't need to log encrypted data even for debugging because it will significantly grow log's size. Plus, we should avoid logging any data because in the future somebody may leave it in code in decrypted form or log before encryption. Just because code is complicated and it is hard to keep in mind all these problems like security, code conventions, design, etc.

Checklist

• [ ] Change is covered by automated tests
• [+] The coding guidelines are followed
• [+] Public API has proper documentation in the Acra documentation site or has PR on documentation repository with new changes
• [+] CHANGELOG.md is updated (in case of notable or breaking changes)
• [+] CHANGELOG_DEV.md is updated
• [+] Benchmark results are attached (if applicable)
• + are up-to-date (in case of API changes)