Modified entire test directory to suit new GPU constructs for looping

tests/hmc/Test_hmc_WCMixedRepFG_Production.cc

@@ -70,7 +70,7 @@ namespace Grid{
 
 int main(int argc, char **argv) {
   using namespace Grid;
-  using namespace Grid::QCD;
+   
 
   // Here change the allowed (higher) representations
   typedef Representations< FundamentalRepresentation, TwoIndexAntiSymmetricRepresentation> TheRepresentations;