intel: don't disable if intel_gpu_top fails

Before we only had intel_gpu_top to rely on, but now
we can also get gpu load from fd.

src/intel.cpp

@@ -62,8 +62,6 @@ void Intel::intel_gpu_thread(){
         if (exitcode == 1)
         SPDLOG_INFO("Missing permissions for '{}'", "intel_gpu_top");
 
-        SPDLOG_INFO("Disabling gpu_stats");
-        HUDElements.params->enabled[OVERLAY_PARAM_ENABLED_gpu_stats] = false;
     }
 }