MINOR: remove an unused method and adjust method visibility in Utils.java #21398
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Removed safe(List other): This method is not used.
Removed getKafkaClassLoader(): This method was a simple one-line
wrapper. It has been removed, and its logic
(Utils.class.getClassLoader()) has been inlined into
getContextOrKafkaClassLoader() to simplify the code.
Reviewers: PoAn Yang payang@apache.org, Ken Huang
s7133700@gmail.com, Chia-Ping Tsai chia7712@gmail.com