class_docstr: User-facing configuration API, accessible through `SparkSession.conf`.
  
  Options set here are automatically propagated to the Hadoop configuration during I/O.
  
  .. versionchanged:: 3.4.0
      Supports Spark Connect.
docstr: Resets the configuration property for the given key.
  
  .. versionadded:: 2.0.0
  
  Parameters
  ----------
  key : str
      key of the configuration to unset.
  
  Examples
  --------
  >>> spark.conf.set("my_key", "my_value")
  >>> spark.conf.get("my_key")
  'my_value'
  >>> spark.conf.unset("my_key")
  >>> spark.conf.get("my_key")
  Traceback (most recent call last):
     ...
  pyspark...SparkNoSuchElementException: ... The SQL config "my_key" cannot be found...
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code: def unset(self, key: str) -> None:
      """
      Resets the configuration property for the given key.
  
      .. versionadded:: 2.0.0
  
      Parameters
      ----------
      key : str
          key of the configuration to unset.
  
      Examples
      --------
      >>> spark.conf.set("my_key", "my_value")
      >>> spark.conf.get("my_key")
      'my_value'
      >>> spark.conf.unset("my_key")
      >>> spark.conf.get("my_key")
      Traceback (most recent call last):
         ...
      pyspark...SparkNoSuchElementException: ... The SQL config "my_key" cannot be found...
      """
      self._jconf.unset(key)
  
file_path: spark/python/pyspark/sql/conf.py
imports: import sys
  from typing import Any, Optional, Union
  from py4j.java_gateway import JavaObject
  from pyspark import _NoValue
  from pyspark._globals import _NoValueType
  from pyspark.errors import PySparkTypeError
label_desc: Use image node_id 4 for calling the RuntimeConfig obj's underlying member method code with example usage: obj.unset(key) without return types