[bugfix] remove using std to avoid collision

Carsten Griwodz · Carsten Griwodz · commit b6aca69b3dc1 · 2018-06-20T09:26:28.000+02:00
diff --git a/src/popsift/s_filtergrid.cu b/src/popsift/s_filtergrid.cu
@@ -16,8 +16,6 @@
 #define nvtxRangePop()
 #endif
 
-using namespace std;
-
 #if not POPSIFT_IS_DEFINED(POPSIFT_DISABLE_GRID_FILTER)
 
 #include <thrust/device_vector.h>
