Revert unrelated newline change and cleanup comments

Author: HyukjinKwon

sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/json/JacksonParser.scala

@@ -40,6 +40,7 @@ private[sql] class SparkSQLJsonProcessingException(msg: String) extends RuntimeE
 class JacksonParser(
     schema: StructType,
     options: JSONOptions) extends Logging {
+
   import JacksonUtils._
   import ParseModes._
   import com.fasterxml.jackson.core.JsonToken._

sql/core/src/main/scala/org/apache/spark/sql/functions.scala

@@ -3004,11 +3004,11 @@ object functions {
     from_json(e, schema, options.asScala.toMap)
 
   /**
-   * (Java-specific) Parses a column containing a JSON object or array string into a `StructType`
-   * or `ArrayType` with the specified schema. Returns `null`, in the case of an unparseable string.
+   * (Java-specific) Parses a column containing a JSON string into a `StructType` or `ArrayType`
+   * with the specified schema. Returns `null`, in the case of an unparseable string.
    *
-   * @param e a string column containing JSON object or array data.
-   * @param schema the schema to use when parsing the json object or array string
+   * @param e a string column containing JSON data.
+   * @param schema the schema to use when parsing the json string
    * @param options options to control how the json is parsed. accepts the same options and the
    *                json data source.
    *