[nvccWarnings] Fix warnings seen with dtests on nvcc path

[ROCm/hip commit: eea7d495c7]

projects/hip/tests/src/deviceLib/hipDeviceMemcpy.cpp

@@ -29,7 +29,7 @@ __global__ void set(hipLaunchParm lp, uint32_t *ptr, uint8_t val, size_t size)
 int main()
 {
     uint32_t *A, *Ad, *B, *Bd;
-    uint32_t *Val, *Vald;
+    uint32_t *Val;
     A = new uint32_t[LEN];
     B = new uint32_t[LEN];
     Val = new uint32_t;