[nvccWarnings] Fix warnings seen with dtests on nvcc path

[ROCm/hip commit: eea7d495c7]

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

@@ -55,7 +55,7 @@ __global__ void floatMath(hipLaunchParm lp, float *In, float *Out) {
 }
 
 int main(){
-  float *Inh, *Outh, *Ind, *Outd;
+  float  *Ind, *Outd;
   hipMalloc((void**)&Ind, SIZE);
   hipMalloc((void**)&Outd, SIZE);
   hipLaunchKernel(floatMath, dim3(LEN,1,1), dim3(1,1,1), 0, 0, Ind, Outd);