Fixes delete of a flavor in syspanel. Fixes bug 924110. novaclient API is changed - purge param is removed. Patch 2: removed duplicate line Patch 3: removed repeated test call of the same method (3709)

Fixes delete of a flavor in syspanel. Fixes bug 924110. novaclient API is changed - purge param is removed. Patch 2: removed duplicate line Patch 3: removed repeated test call of the same method (3709) · Gerrit Code Review