Remove duplicate code in gce list_nodes() after merge
Remove duplicate code in gce list_nodes() after merge

mistio/libcloud,Kami/libcloud,apache/libcloud,andrewsomething/libcloud,apache/libcloud,mistio/libcloud,mistio/libcloud,apache/libcloud,andrewsomething/libcloud,Kami/libcloud,Kami/libcloud,andrewsomething/libcloud