removed unnecessary imports from backup manager files
diff --git a/setup/doctype/backup_manager/backup_googledrive.py b/setup/doctype/backup_manager/backup_googledrive.py
index a767b3a..4b2a82c 100644
--- a/setup/doctype/backup_manager/backup_googledrive.py
+++ b/setup/doctype/backup_manager/backup_googledrive.py
@@ -11,12 +11,11 @@
 # gdrive_client_secret
 
 import httplib2
-import sys
 import os
 import mimetypes
 import webnotes
 import oauth2client.client
-from webnotes.utils import get_request_site_address, get_base_path
+from webnotes.utils import get_base_path
 from webnotes import _, msgprint
 from apiclient.discovery import build
 from apiclient.http import MediaFileUpload
@@ -53,7 +52,7 @@
 	from webnotes.utils.backups import new_backup
 	if not webnotes.conn:
 		webnotes.connect()
-	flow = get_gdrive_flow()
+	get_gdrive_flow()
 	credentials_json = webnotes.conn.get_value("Backup Manager", None, "gdrive_credentials")
 	credentials = oauth2client.client.Credentials.new_from_json(credentials_json)
 	http = httplib2.Http()
@@ -101,11 +100,6 @@
 		webnotes.msgprint(_("Please set Google Drive access keys in") + " conf.py", 
 		raise_exception=True)
 
-	#callback_url = get_request_site_address(True) \
-	#	+ "?cmd=setup.doctype.backup_manager.backup_googledrive.googledrive_callback"
-	
-	# for installed apps since google does not support subdomains
-	
 	flow = OAuth2WebServerFlow(conf.gdrive_client_id, conf.gdrive_client_secret, 
 		"https://www.googleapis.com/auth/drive", 'urn:ietf:wg:oauth:2.0:oob')
 	return flow
diff --git a/setup/doctype/backup_manager/backup_manager.py b/setup/doctype/backup_manager/backup_manager.py
index 213aa85..4fb6ab3 100644
--- a/setup/doctype/backup_manager/backup_manager.py
+++ b/setup/doctype/backup_manager/backup_manager.py
@@ -3,8 +3,6 @@
 from __future__ import unicode_literals
 import webnotes
 from webnotes import _
-from backup_dropbox import dropbox_callback, get_dropbox_session, get_dropbox_authorize_url
-from backup_googledrive import gdrive_callback, get_gdrive_flow, get_gdrive_authorize_url
 
 class DocType:
 	def __init__(self, d, dl):