diff --git a/src/system/sysutils.cpp b/src/system/sysutils.cpp
index 9119175..4e3f3f2 100644
--- a/src/system/sysutils.cpp
+++ b/src/system/sysutils.cpp
@@ -164,27 +164,6 @@ void gettimeofday(struct timeval *tv, void *tz)
     tv->tv_sec = (long)((now.ns100 - 116444736000000000LL) / 10000000LL); 
 }
 
-void clock_gettime(int, struct timespec *ts)
-{
-    static LARGE_INTEGER cps;
-    static bool haveCps = false;
-    
-    if (!haveCps) {
-        QueryPerformanceFrequency(&cps);
-        haveCps = true;
-    }
-
-    LARGE_INTEGER counter;
-    QueryPerformanceCounter(&counter);
-
-    //!!! check this
-    ts->tv_sec = counter.QuadPart / cps.QuadPart;
-    double sub = counter.QuadPart % cps.QuadPart;
-    sub = sub / cps.QuadPart;
-    sub = sub * 1000000000.;
-    ts->tv_nsec = long(sub) ;
-}
-
 void usleep(unsigned long usec)
 {
     ::Sleep(usec == 0 ? 0 : usec < 1000 ? 1 : usec / 1000);
@@ -192,20 +171,6 @@ void usleep(unsigned long usec)
 
 #endif
 
-#ifdef __APPLE__
-
-void clock_gettime(int, struct timespec *ts)
-{
-    uint64_t t = mach_absolute_time();
-    static mach_timebase_info_data_t sTimebaseInfo;
-    if (sTimebaseInfo.denom == 0) (void)mach_timebase_info(&sTimebaseInfo);
-    uint64_t n = t * sTimebaseInfo.numer / sTimebaseInfo.denom;
-    ts->tv_sec = n / 1000000000;
-    ts->tv_nsec = n % 1000000000;
-}
-
-#endif
-
 void system_specific_initialise()
 {
 #if defined HAVE_IPP
diff --git a/src/system/sysutils.h b/src/system/sysutils.h
index 6608981..a269659 100644
--- a/src/system/sysutils.h
+++ b/src/system/sysutils.h
@@ -81,24 +81,11 @@ extern void system_specific_application_initialise();
 enum ProcessStatus { ProcessRunning, ProcessNotRunning, UnknownProcessStatus };
 extern ProcessStatus system_get_process_status(int pid);
 
-#ifdef __APPLE__
-struct timespec { long tv_sec; long tv_nsec; };
-void clock_gettime(int clk_id, struct timespec *p);
-#define CLOCK_MONOTONIC 1
-#define CLOCK_REALTIME 2
-#endif
-
 #ifdef _WIN32
 
 struct timeval { long tv_sec; long tv_usec; };
 void gettimeofday(struct timeval *p, void *tz);
 
-struct timespec { long tv_sec; long tv_nsec; };
-// always uses GetPerformanceCounter, does not check whether it's valid or not:
-void clock_gettime(int clk_id, struct timespec *p);
-#define CLOCK_MONOTONIC 1
-#define CLOCK_REALTIME 2
-
 #endif
 
 #ifdef __MSVC__