Clean up Nova API prereq

Bug 980966

Change-Id: If5bbcc094b54a2de96151d69653e57e0e540d6de
diff --git a/files/apts/n-api b/files/apts/n-api
index ad943ff..0f08daa 100644
--- a/files/apts/n-api
+++ b/files/apts/n-api
@@ -1,2 +1 @@
-gcc  # temporary because this pulls in glance to get the client without running the glance prereqs
 python-dateutil