remove scala structured streaming (#120)

Author: zach-carr

source/structured-streaming.txt

@@ -92,61 +92,6 @@ Configuring a Write Stream to MongoDB
          For a complete list of methods, see the 
          `pyspark Structured Streaming reference <https://spark.apache.org/docs/latest/api/python/reference/pyspark.ss.html>`__.
 
-     - id: scala
-       content: |
-
-         Specify write stream configuration settings on your streaming 
-         Dataset or DataFrame using the ``writeStream`` property. You 
-         must specify the following configuration settings to write 
-         to MongoDB:
-         
-         .. list-table::
-            :header-rows: 1
-            :stub-columns: 1
-            :widths: 10 40
-         
-            * - Setting
-              - Description
-         
-            * - ``writeStream.format()``
-              - The format to use for write stream data. Use 
-                ``mongodb``.
-         
-            * - ``writeStream.option()``
-              - Use the ``option`` method to specify your MongoDB 
-                deployment connection string with the 
-                ``spark.mongodb.connection.uri`` option key.
-         
-                You must specify a database and collection, either as 
-                part of your connection string or with additional 
-                ``option`` methods using the following keys:
-         
-                - ``spark.mongodb.database``
-                - ``spark.mongodb.collection``
-         
-            * - ``writeStream.outputMode()``
-              - The output mode to use. To view a list of all supported 
-                output modes, see `the pyspark outputMode documentation <https://spark.apache.org/docs/latest/api/python/reference/api/pyspark.sql.streaming.DataStreamWriter.outputMode.html#pyspark.sql.streaming.DataStreamWriter.outputMode>`__.
-
-         
-         The following code snippet shows how to use the preceding 
-         configuration settings to stream data to MongoDB:
-
-         .. code-block:: python
-            :copyable: true
-            :emphasize-lines: 3-4, 7
-         
-            <streaming Dataset/ DataFrame> \
-              .writeStream \
-              .format("mongodb") \
-              .option("spark.mongodb.connection.uri", <mongodb-connection-string>) \
-              .option("spark.mongodb.database", <database-name>) \
-              .option("spark.mongodb.collection", <collection-name>) \
-              .outputMode("append")
-
-         For a complete list of methods, see the 
-         `pyspark Structured Streaming reference <https://spark.apache.org/docs/latest/api/python/reference/pyspark.ss.html>`__.
-
 .. _read-structured-stream:
 .. _continuous-processing: