Remove dead code from image_manager_xx.cpp

Image swizzle mode will be set by the preferred surface info
function.

Change-Id: I41e639be53cafbb4db6cf15c159aa2bd457ec5be


[ROCm/ROCR-Runtime commit: 1440da3e15]

projects/rocr-runtime/runtime/hsa-runtime/image/image_manager_ai.cpp

@@ -498,7 +498,6 @@ uint32_t ImageManagerAi::GetAddrlibSurfaceInfoAi(
     in.resourceType = ADDR_RSRC_TEX_3D;
     break;
   }
-  in.swizzleMode  = (tileMode == Image::TileMode::LINEAR)? ADDR_SW_LINEAR : ADDR_SW_4KB;
   in.flags.texture = 1;
 
   ADDR2_GET_PREFERRED_SURF_SETTING_INPUT  prefSettingsInput = { 0 };