Remove reference to ResizeNotAllowed error

This error no longer exist, it was removed in nova by in the change-id:
Ib2b5acba291a04e0c0296fa5e8438019983dda20

Fixes bug 1089401
Partially implements: bp nova-v2-api-audit

Patchset rebases against master (ensure 1.5.2 is used in pom.xml for the build.)

Change-Id: I115cc1bd96b94d5d7855feb2c9d2bd9f0744f319
Merge "Remove reference to ResizeNotAllowed error"