BUG: fix statement with no effect

Modules/IO/TestKernel/src/otbTestDriver.cxx

@@ -190,7 +190,6 @@ int main(int ac, char* av[])
 // This is a dummy main to be registered as a test for the otbTestMain
 int Execute(int argc, char * argv[])
 {
-  argc -= 1;
   argv += 1;
   // Create the appropriate itk process
   itksysProcess * process = itksysProcess_New();