use tosca-parser
remove unnecessary includes

Change-Id: I3e758d6acd621bb8dd179c300e9cf77d710bb68d
diff --git a/xos/tosca/resources/cdnprefix.py b/xos/tosca/resources/cdnprefix.py
index 8daf7fb..0b946ed 100644
--- a/xos/tosca/resources/cdnprefix.py
+++ b/xos/tosca/resources/cdnprefix.py
@@ -1,13 +1,5 @@
-import os
-import pdb
-import sys
-import tempfile
-sys.path.append("/opt/tosca")
-from translator.toscalib.tosca_template import ToscaTemplate
-
-from services.hpc.models import CDNPrefix, ContentProvider
-
 from xosresource import XOSResource
+from services.hpc.models import CDNPrefix, ContentProvider
 
 class XOSCDNPrefix(XOSResource):
     provides = "tosca.nodes.CDNPrefix"