Remove pessimistic String calls for low level logs

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 79.16%. Comparing base (78a9ef9) to head (6c8372c).

:exclamation: Current head 6c8372c differs from pull request most recent head 85e4c9b. Consider uploading reports for the commit 85e4c9b to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #694 +/- ## ========================================== - Coverage 79.22% 79.16% -0.06% ========================================== Files 41 41 Lines 3735 3734 -1 ========================================== - Hits 2959 2956 -3 - Misses 547 548 +1 - Partials 229 230 +1 ``` | [Flag](https://app.codecov.io/gh/pion/ice/pull/694/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pion) | Coverage Δ | | |---|---|---| | [go](https://app.codecov.io/gh/pion/ice/pull/694/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pion) | `79.16% <100.00%> (-0.06%)` | :arrow_down: | | [wasm](https://app.codecov.io/gh/pion/ice/pull/694/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pion) | `22.16% <0.00%> (+<0.01%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pion#carryforward-flags-in-the-pull-request-comment) to find out more.

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