Fix tests

Author: HyukjinKwon

python/pyspark/sql/udf.py

@@ -376,17 +376,17 @@ def registerJavaFunction(self, name, javaClassName, returnType=None):
         >>> spark.udf.registerJavaFunction(
         ...     "javaStringLength", "test.org.apache.spark.sql.JavaStringLength", IntegerType())
         >>> spark.sql("SELECT javaStringLength('test')").collect()
-        [Row(UDF:javaStringLength(test)=4)]
+        [Row(javaStringLength(test)=4)]
 
         >>> spark.udf.registerJavaFunction(
         ...     "javaStringLength2", "test.org.apache.spark.sql.JavaStringLength")
         >>> spark.sql("SELECT javaStringLength2('test')").collect()
-        [Row(UDF:javaStringLength2(test)=4)]
+        [Row(javaStringLength2(test)=4)]
 
         >>> spark.udf.registerJavaFunction(
         ...     "javaStringLength3", "test.org.apache.spark.sql.JavaStringLength", "integer")
         >>> spark.sql("SELECT javaStringLength3('test')").collect()
-        [Row(UDF:javaStringLength3(test)=4)]
+        [Row(javaStringLength3(test)=4)]
         """
 
         jdt = None