[SPARK-39266][CORE] Cleanup unused `spark.rpc.numRetries` and `spark.rpc.retry.wait` configs#36645

JoshRosen wants to merge 1 commit intoapache:masterapache/spark:masterfrom

JoshRosen:cleanup-unused-rpc-configsJoshRosen/spark:cleanup-unused-rpc-configsCopy head branch name to clipboard