Revert "replaced use of depricated module scrapy.settings with the method get_project_settings()"

This reverts commit 1b4d14c8f6.

Calling `get_project_settings()` generates a new independent Settings
object that doesn't contain the overrides passed by command line
arguments, for example.

Proper port would require implementing the from_crawler() class method
and making sure the settings object is passed to all internal objects
(probably breaking some minor backwards compatibility).

scrapy/contrib/feedexport.py

@@ -19,7 +19,6 @@ from scrapy.utils.ftp import ftp_makedirs_cwd
 from scrapy.exceptions import NotConfigured
 from scrapy.utils.misc import load_object
 from scrapy.utils.python import get_func_args
-from scrapy.utils.project import get_project_settings
 
 
 class IFeedStorage(Interface):
@@ -82,7 +81,7 @@ class FileFeedStorage(object):
 class S3FeedStorage(BlockingFeedStorage):
 
     def __init__(self, uri):
-        settings = get_project_settings()
+        from scrapy.conf import settings
         try:
             import boto
         except ImportError: