remove extra whitespace from output in main function

offloading-cacher/main.cpp

@@ -123,15 +123,15 @@ void RunTestST(const size_t size) {
 
     static constexpr int tid = 0;
 
-    std::cout << "[" << tid << "]  first access --- " << std::endl;
+    std::cout << "[" << tid << "] first access --- " << std::endl;
 
     PerformAccessAndTest(data, size, tid);
 
-    std::cout << "[" << tid << "]  second access --- " << std::endl;
+    std::cout << "[" << tid << "] second access --- " << std::endl;
 
     PerformAccessAndTest(data, size, tid);
 
-    std::cout << "[" << tid << "]  end of application --- " << std::endl;
+    std::cout << "[" << tid << "] end of application --- " << std::endl;
 }
 
 void RunTestMT(const size_t size) {