Remove dead code from image_manager_xx.cpp

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

Change-Id: I41e639be53cafbb4db6cf15c159aa2bd457ec5be

runtime/hsa-runtime/image/image_manager_nv.cpp

@@ -611,8 +611,6 @@ uint32_t ImageManagerNv::GetAddrlibSurfaceInfoNv(
       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 };