Remove unnecessary NN Proguard rules

[Guardiola31337]

Description

Fixes #2663

Removes unnecessary NN Proguard rules as they were added downstream
Workarounds Logger minification regression from #2774 👀 mapbox/mapbox-base-android#41

• I have added any issue links
• I have added all related labels (bug, feature, new API(s), SEMVER, etc.)
• I have added the appropriate milestone and project boards

Goal

Clean up libnavigator/proguard-rules.pro not necessary anymore as NN 11.0.1 already adds them

Implementation

Remove

-keep class com.mapbox.navigator.** { *; }	
-keep class com.mapbox.bindgen.** { *; }

from libnavigator/proguard-rules.pro

Adds

-keep class com.mapbox.common.logger.MapboxLogger {*;}

to libnavigation-core/proguard-rules.pro

Testing

• I have tested the examples test app with minifyEnabled true
• I have tested locally (including SNAPSHOT upstream dependencies if needed) through testapp/demo app and run all activities to avoid regressions
• I have tested via a test drive, or a simulation/mock location app
• New and existing unit tests pass locally with my changes

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have updated the CHANGELOG including this PR

cc @RingerJK