removed gpu name usage from ocl module

modules/ocl/test/test_moments.cpp

@@ -23,11 +23,11 @@ PARAM_TEST_CASE(MomentsTest, MatType, bool)
         mat1 = randomMat(rng, size, type, 5, 16, false);
     }
 
-    void Compare(Moments& cpu, Moments& gpu)
+    void Compare(Moments& cpu_moments, Moments& gpu_moments)
     {
         Mat gpu_dst, cpu_dst;
-        HuMoments(cpu, cpu_dst);
-        HuMoments(gpu, gpu_dst);
+        HuMoments(cpu_moments, cpu_dst);
+        HuMoments(gpu_moments, gpu_dst);
         EXPECT_MAT_NEAR(gpu_dst, cpu_dst, .5);
     }
 

modules/ocl/test/utility.cpp

@@ -43,7 +43,6 @@
 #define VARNAME(A) #A
 using namespace std;
 using namespace cv;
-using namespace cv::gpu;
 using namespace cvtest;