Remove unused system utils functions

src/app/system.cpp

@@ -157,22 +157,6 @@ void CSystemUtils::CopyTimeStamp(SystemTimeStamp *dst, SystemTimeStamp *src)
     *dst = *src;
 }
 
-float CSystemUtils::GetTimeStampResolution(SystemTimeUnit unit)
-{
-    unsigned long long exact = GetTimeStampExactResolution();
-    float result = 0.0f;
-    if (unit == STU_SEC)
-        result = exact * 1e-9;
-    else if (unit == STU_MSEC)
-        result = exact * 1e-6;
-    else if (unit == STU_USEC)
-        result = exact * 1e-3;
-    else
-        assert(false);
-
-    return result;
-}
-
 float CSystemUtils::TimeStampDiff(SystemTimeStamp *before, SystemTimeStamp *after, SystemTimeUnit unit)
 {
     long long exact = TimeStampExactDiff(before, after);

src/app/system.h

@@ -115,12 +115,6 @@ public:
     //! Returns a time stamp associated with current time
     virtual void GetCurrentTimeStamp(SystemTimeStamp *stamp) = 0;
 
-    //! Returns the platform's expected time stamp resolution
-    TEST_VIRTUAL float GetTimeStampResolution(SystemTimeUnit unit = STU_SEC);
-
-    //! Returns the platform's exact (in nanosecond units) expected time stamp resolution
-    virtual long long GetTimeStampExactResolution() = 0;
-
     //! Returns a difference between two timestamps in given time unit
     /** The difference is \a after - \a before. */
     TEST_VIRTUAL float TimeStampDiff(SystemTimeStamp *before, SystemTimeStamp *after, SystemTimeUnit unit = STU_SEC);

src/app/system_linux.cpp

@@ -87,11 +87,6 @@ void CSystemUtilsLinux::GetCurrentTimeStamp(SystemTimeStamp *stamp)
     clock_gettime(CLOCK_MONOTONIC_RAW, &stamp->clockTime);
 }
 
-long long CSystemUtilsLinux::GetTimeStampExactResolution()
-{
-    return 1ll;
-}
-
 long long CSystemUtilsLinux::TimeStampExactDiff(SystemTimeStamp *before, SystemTimeStamp *after)
 {
     return (after->clockTime.tv_nsec - before->clockTime.tv_nsec) +

src/app/system_linux.h

@@ -45,7 +45,6 @@ public:
     virtual SystemDialogResult SystemDialog(SystemDialogType type, const std::string& title, const std::string& message) OVERRIDE;
 
     virtual void GetCurrentTimeStamp(SystemTimeStamp *stamp) OVERRIDE;
-    virtual long long GetTimeStampExactResolution() OVERRIDE;
     virtual long long TimeStampExactDiff(SystemTimeStamp *before, SystemTimeStamp *after) OVERRIDE;
 
     virtual std::string GetSaveDir() OVERRIDE;

src/app/system_other.cpp

@@ -30,11 +30,6 @@ void CSystemUtilsOther::GetCurrentTimeStamp(SystemTimeStamp* stamp)
     stamp->sdlTicks = SDL_GetTicks();
 }
 
-long long int CSystemUtilsOther::GetTimeStampExactResolution()
-{
-    return 1000000ll;
-}
-
 long long int CSystemUtilsOther::TimeStampExactDiff(SystemTimeStamp* before, SystemTimeStamp* after)
 {
     return (after->sdlTicks - before->sdlTicks) * 1000000ll;

src/app/system_other.h

@@ -46,7 +46,6 @@ public:
     virtual SystemDialogResult SystemDialog(SystemDialogType type, const std::string& title, const std::string& message) OVERRIDE;
 
     virtual void GetCurrentTimeStamp(SystemTimeStamp *stamp) OVERRIDE;
-    virtual long long int GetTimeStampExactResolution() OVERRIDE;
     virtual long long TimeStampExactDiff(SystemTimeStamp *before, SystemTimeStamp *after) OVERRIDE;
 
     virtual void Usleep(int usec) OVERRIDE;

src/app/system_windows.cpp

@@ -83,11 +83,6 @@ void CSystemUtilsWindows::GetCurrentTimeStamp(SystemTimeStamp* stamp)
     stamp->counterValue = value.QuadPart;
 }
 
-long long int CSystemUtilsWindows::GetTimeStampExactResolution()
-{
-    return 1000000000ll / m_counterFrequency;
-}
-
 long long int CSystemUtilsWindows::TimeStampExactDiff(SystemTimeStamp* before, SystemTimeStamp* after)
 {
     float floatValue = static_cast<double>(after->counterValue - before->counterValue) * (1e9 / static_cast<double>(m_counterFrequency));

src/app/system_windows.h

@@ -43,7 +43,6 @@ public:
     virtual SystemDialogResult SystemDialog(SystemDialogType type, const std::string& title, const std::string& message) OVERRIDE;
 
     virtual void GetCurrentTimeStamp(SystemTimeStamp *stamp) OVERRIDE;
-    virtual long long GetTimeStampExactResolution() OVERRIDE;
     virtual long long TimeStampExactDiff(SystemTimeStamp *before, SystemTimeStamp *after) OVERRIDE;
 
     virtual std::string GetSaveDir() OVERRIDE;