Remove deprecated methods and constants

- `Logger::validateLevel()`
- `Logger::setTraceLevel()`
- `Logger::setExcludedTracePaths()`
- `SystemContextProvider::setTraceLevel()`
- `SystemContextProvider::setExcludedTracePaths()`
- `Target::getCommonContext()`
- `Target::setCommonContext()`
- `CategoryFilter::DEFAULT`