Refactor: remove once-used function, wrap lines.

src/mlpack/core/util/timers.cpp

@@ -14,12 +14,6 @@
 
 using namespace mlpack;
 
-inline std::chrono::microseconds getTimeDuration(const std::chrono::high_resolution_clock::time_point start,
-                                                  const std::chrono::high_resolution_clock::time_point end)
-{
-  return std::chrono::duration_cast<std::chrono::microseconds>(end - start);
-}
-
 /**
  * Start the given timer.
  */
@@ -166,5 +160,6 @@ void Timers::StopTimer(const std::string& timerName)
   std::chrono::high_resolution_clock::time_point currTime = GetTime();
 
   // Calculate the delta time.
-  timers[timerName] += getTimeDuration(timerStartTime[timerName], currTime);
+  timers[timerName] += std::chrono::duration_cast<std::chrono::microseconds>(
+      currTime - timerStartTime[timerName])
 }

src/mlpack/core/util/timers.hpp

@@ -110,18 +110,19 @@ class Timers
 
   /**
    * Returns state of the given timer.
-   * 
+   *
    * @param timerName The name of the timer in question.
    */
   bool GetState(std::string timerName);
-  
+
  private:
   //! A map of all the timers that are being tracked.
   std::map<std::string, std::chrono::microseconds> timers;
   //! A map that contains whether or not each timer is currently running.
   std::map<std::string, bool> timerState;
   //! A map for the starting values of the timers.
-  std::map<std::string, std::chrono::high_resolution_clock::time_point> timerStartTime;
+  std::map<std::string, std::chrono::high_resolution_clock::time_point>
+      timerStartTime;
 
   std::chrono::high_resolution_clock::time_point GetTime();
 };