Do not initialize CoroutineExceptionHandler in Job <clinit> (#2513)
Do not initialize CoroutineExceptionHandler in Job <clinit> (#2513)

* It slightly cuts down startup time
    * It simplifies the code in general
    * It do not serve its purpose, coroutines are already protected from StackOverflowError with nested event-loops where applicable
Kotlin/kotlinx.coroutines,Kotlin/kotlinx.coroutines,Kotlin/kotlinx.coroutines,Kotlin/kotlinx.coroutines,Kotlin/kotlinx.coroutines