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--- a/Allura/allura/model/artifact.py
+++ b/Allura/allura/model/artifact.py
@@ -7,7 +7,6 @@
 from time import sleep
 from datetime import datetime
 import Image
-from mimetypes import guess_type
 
 import pymongo
 from pylons import c, g
@@ -721,49 +720,3 @@
         else:
             return None
 
-class BaseAttachment(File):
-    thumbnail_size = (255, 255)
-
-    class __mongometa__:
-        name = 'attachment.files'
-        session = project_orm_session
-        indexes = ['metadata.filename']
-
-    # Override the metadata schema here
-    metadata=FieldProperty(dict(
-            artifact_id=S.ObjectId,
-            app_config_id=S.ObjectId,
-            type=str,
-            filename=str))
-
-    def url(self):
-        return self.artifact.url() + 'attachment/' + self.filename
-
-    def is_embedded(self):
-        from pylons import request
-        return self.metadata.filename in request.environ.get('allura.macro.att_embedded', [])
-
-    @classmethod
-    def create_with_thumbnail(cls, file_info, artifact_id, artifact_id_name):
-        if h.supported_by_PIL(file_info.type):
-            meta = dict(type="thumbnail", app_config_id=c.app.config._id)
-            meta[artifact_id_name] = artifact_id
-            original_meta = dict(type="attachment", app_config_id=c.app.config._id)
-            original_meta[artifact_id_name] = artifact_id
-            h.save_image(file_info, cls, square=True, thumbnail_size=cls.thumbnail_size, save_original=True,
-                         meta=meta, original_meta=original_meta)
-        else:
-            filename = file_info.filename
-            content_type = guess_type(filename)
-            if content_type: content_type = content_type[0]
-            else: content_type = 'application/octet-stream'
-            args = dict(content_type=content_type,
-                        filename=filename,
-                        type="attachment",
-                        app_config_id=c.app.config._id)
-            args[artifact_id_name] = artifact_id
-            with cls.create(**args) as fp:
-                while True:
-                    s = file_info.file.read()
-                    if not s: break
-                    fp.write(s)