fix two unused variables

I don't find these two warnings until now, and here's the simple fix.

Signed-off-by: Lu Guanqun <guanqun.lu@intel.com>
Reviewed-by: Zhigang Gong <zhigang.gong@linux.intel.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/utests/compiler_fill_image.cpp b/utests/compiler_fill_image.cpp
index bf7fe8da..b15cdffe 100644
--- a/utests/compiler_fill_image.cpp
+++ b/utests/compiler_fill_image.cpp
@@ -5,7 +5,6 @@ static void compiler_fill_image(void)
   const size_t w = 512;
   const size_t h = 512;
   cl_image_format format;
-  cl_sampler sampler;
   uint32_t color = 0x12345678;
 
   format.image_channel_order = CL_RGBA;