Revert "Update submit_job_to_cluster.py (#1708)"

This reverts commit cdab25b.

dataproc/submit_job_to_cluster.py

@@ -34,6 +34,14 @@ def get_pyspark_file(filename):
     return f, os.path.basename(filename)
 
 
+def get_region_from_zone(zone):
+    try:
+        region_as_list = zone.split('-')[:-1]
+        return '-'.join(region_as_list)
+    except (AttributeError, IndexError, ValueError):
+        raise ValueError('Invalid zone provided, please check your input.')
+
+
 def upload_pyspark_file(project_id, bucket_name, filename, file):
     """Uploads the PySpark file in this directory to the configured
     input bucket."""
@@ -191,7 +199,7 @@ def get_client():
 def main(project_id, zone, cluster_name, bucket_name,
          pyspark_file=None, create_new_cluster=True):
     dataproc = get_client()
-    region = 'global'
+    region = get_region_from_zone(zone)
     try:
         if pyspark_file:
             spark_file, spark_filename = get_pyspark_file(pyspark_file)