pvr: Remove duplicate variable queue_create.

Fix defect reported by Coverity Scan.

Evaluation order violation (EVALUATION_ORDER)
write_write_typo: In queue_create = queue_create = &pCreateInfo->pQueueCreateInfos[0], queue_create is written twice with the same value.

Fixes: 8991e646 ("pvr: Add a Vulkan driver for Imagination Technologies PowerVR Rogue GPUs")
Signed-off-by: Vinson Lee <vlee@freedesktop.org>
Reviewed-by: Frank Binns <frank.binns@imgtec.com>
Part-of: <!15604>