q_segmentation: disable delta_q encoding when enabled
q_segmentation: disable delta_q encoding when enabled

The decoder side correctly disabled delta_q but the encoder didn't.

Change-Id: I9f720c678d9e99d723c632095c058eaecd1a639d

GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom