diff --git a/cogl/cogl/cogl-context.c b/cogl/cogl/cogl-context.c
index 85002cdec..b7bf14f87 100644
--- a/cogl/cogl/cogl-context.c
+++ b/cogl/cogl/cogl-context.c
@@ -449,17 +449,6 @@ _cogl_context_set_current_modelview_entry (CoglContext *context,
   context->current_modelview_entry = entry;
 }
 
-int64_t
-cogl_get_clock_time (CoglContext *context)
-{
-  const CoglWinsysVtable *winsys = _cogl_context_get_winsys (context);
-
-  if (winsys->context_get_clock_time)
-    return winsys->context_get_clock_time (context);
-  else
-    return 0;
-}
-
 CoglGraphicsResetStatus
 cogl_get_graphics_reset_status (CoglContext *context)
 {
diff --git a/cogl/cogl/cogl-context.h b/cogl/cogl/cogl-context.h
index b6e8b8152..20b9561b9 100644
--- a/cogl/cogl/cogl-context.h
+++ b/cogl/cogl/cogl-context.h
@@ -286,29 +286,6 @@ cogl_foreach_feature (CoglContext *context,
                       CoglFeatureCallback callback,
                       void *user_data);
 
-/**
- * cogl_get_clock_time:
- * @context: a #CoglContext pointer
- *
- * Returns the current time value from Cogl's internal clock. This
- * clock is used for measuring times such as the presentation time
- * in a #CoglFrameInfo.
- *
- * This method is meant for converting timestamps retrieved from Cogl
- * to other time systems, and is not meant to be used as a standalone
- * timing system. For that reason, if this function is called without
- * having retrieved a valid (non-zero) timestamp from Cogl first, it
- * may return 0 to indicate that Cogl has no active internal clock.
- *
- * Return value: the time value for the Cogl clock, in nanoseconds
- *  from an arbitrary point in time, or 0 if Cogl doesn't have an
- *  active internal clock.
- * Since: 1.14
- * Stability: unstable
- */
-COGL_EXPORT int64_t
-cogl_get_clock_time (CoglContext *context);
-
 /**
  * CoglGraphicsResetStatus:
  * @COGL_GRAPHICS_RESET_STATUS_NO_ERROR:
diff --git a/cogl/cogl/winsys/cogl-winsys-glx.c b/cogl/cogl/winsys/cogl-winsys-glx.c
index bf0acffc9..a2cb5c548 100644
--- a/cogl/cogl/winsys/cogl-winsys-glx.c
+++ b/cogl/cogl/winsys/cogl-winsys-glx.c
@@ -174,51 +174,6 @@ find_onscreen_for_xid (CoglContext *context, uint32_t xid)
   return NULL;
 }
 
-static int64_t
-get_monotonic_time_ns (void)
-{
-  struct timespec ts;
-
-  clock_gettime (CLOCK_MONOTONIC, &ts);
-  return ts.tv_sec * G_GINT64_CONSTANT (1000000000) + ts.tv_nsec;
-}
-
-static int64_t
-_cogl_winsys_get_clock_time (CoglContext *context)
-{
-  CoglGLXRenderer *glx_renderer = context->display->renderer->winsys;
-
-  if (!glx_renderer->glXWaitForMsc)
-    return get_monotonic_time_ns ();
-
-  /* We don't call ensure_ust_type() because we don't have a drawable
-   * to work with. cogl_get_clock_time() is documented to only work
-   * once a valid, non-zero, timestamp has been retrieved from Cogl.
-   */
-
-  switch (glx_renderer->ust_type)
-    {
-    case COGL_GLX_UST_IS_UNKNOWN:
-    case COGL_GLX_UST_IS_OTHER:
-      return 0;
-    case COGL_GLX_UST_IS_GETTIMEOFDAY:
-      {
-        struct timeval tv;
-
-        gettimeofday(&tv, NULL);
-        return tv.tv_sec * G_GINT64_CONSTANT (1000000000) +
-          tv.tv_usec * G_GINT64_CONSTANT (1000);
-      }
-    case COGL_GLX_UST_IS_MONOTONIC_TIME:
-      {
-        return get_monotonic_time_ns ();
-      }
-    }
-
-  g_assert_not_reached();
-  return 0;
-}
-
 static void
 notify_swap_buffers (CoglContext *context, GLXBufferSwapComplete *swap_event)
 {
@@ -1468,7 +1423,6 @@ static CoglWinsysVtable _cogl_winsys_vtable =
     .display_destroy = _cogl_winsys_display_destroy,
     .context_init = _cogl_winsys_context_init,
     .context_deinit = _cogl_winsys_context_deinit,
-    .context_get_clock_time = _cogl_winsys_get_clock_time,
 
     /* X11 tfp support... */
     /* XXX: instead of having a rather monolithic winsys vtable we could
diff --git a/cogl/cogl/winsys/cogl-winsys-private.h b/cogl/cogl/winsys/cogl-winsys-private.h
index 788573f94..29bea6aa4 100644
--- a/cogl/cogl/winsys/cogl-winsys-private.h
+++ b/cogl/cogl/winsys/cogl-winsys-private.h
@@ -105,9 +105,6 @@ typedef struct _CoglWinsysVtable
 
   /* Optional functions */
 
-  int64_t
-  (*context_get_clock_time) (CoglContext *context);
-
 #ifdef COGL_HAS_XLIB_SUPPORT
   gboolean
   (*texture_pixmap_x11_create) (CoglTexturePixmapX11 *tex_pixmap);
diff --git a/src/backends/native/meta-gpu-kms.c b/src/backends/native/meta-gpu-kms.c
index 7cec11325..e964b1094 100644
--- a/src/backends/native/meta-gpu-kms.c
+++ b/src/backends/native/meta-gpu-kms.c
@@ -100,14 +100,6 @@ meta_gpu_kms_is_crtc_active (MetaGpuKms *gpu_kms,
   return TRUE;
 }
 
-static int64_t
-timespec_to_nanoseconds (const struct timespec *ts)
-{
-  const int64_t one_billion = 1000000000;
-
-  return ((int64_t) ts->tv_sec) * one_billion + ts->tv_nsec;
-}
-
 MetaKmsDevice *
 meta_gpu_kms_get_kms_device (MetaGpuKms *gpu_kms)
 {
@@ -132,17 +124,6 @@ meta_gpu_kms_get_file_path (MetaGpuKms *gpu_kms)
   return meta_kms_device_get_path (gpu_kms->kms_device);
 }
 
-int64_t
-meta_gpu_kms_get_current_time_ns (MetaGpuKms *gpu_kms)
-{
-  struct timespec ts;
-
-  if (clock_gettime (gpu_kms->clock_id, &ts))
-    return 0;
-
-  return timespec_to_nanoseconds (&ts);
-}
-
 gboolean
 meta_gpu_kms_is_clock_monotonic (MetaGpuKms *gpu_kms)
 {
diff --git a/src/backends/native/meta-gpu-kms.h b/src/backends/native/meta-gpu-kms.h
index 8af89b0ce..80957f5a0 100644
--- a/src/backends/native/meta-gpu-kms.h
+++ b/src/backends/native/meta-gpu-kms.h
@@ -57,8 +57,6 @@ uint32_t meta_gpu_kms_get_id (MetaGpuKms *gpu_kms);
 
 const char * meta_gpu_kms_get_file_path (MetaGpuKms *gpu_kms);
 
-int64_t meta_gpu_kms_get_current_time_ns (MetaGpuKms *gpu_kms);
-
 gboolean meta_gpu_kms_is_clock_monotonic (MetaGpuKms *gpu_kms);
 
 void meta_gpu_kms_set_power_save_mode (MetaGpuKms    *gpu_kms,
diff --git a/src/backends/native/meta-renderer-native.c b/src/backends/native/meta-renderer-native.c
index 0bb3eb66a..0839904b4 100644
--- a/src/backends/native/meta-renderer-native.c
+++ b/src/backends/native/meta-renderer-native.c
@@ -904,15 +904,6 @@ meta_renderer_native_create_offscreen (MetaRendererNative    *renderer,
   return fb;
 }
 
-static int64_t
-meta_renderer_native_get_clock_time (CoglContext *context)
-{
-  CoglRenderer *cogl_renderer = cogl_context_get_renderer (context);
-  MetaGpuKms *gpu_kms = cogl_renderer->custom_winsys_user_data;
-
-  return meta_gpu_kms_get_current_time_ns (gpu_kms);
-}
-
 static const CoglWinsysVtable *
 get_native_cogl_winsys_vtable (CoglRenderer *cogl_renderer)
 {
@@ -934,8 +925,6 @@ get_native_cogl_winsys_vtable (CoglRenderer *cogl_renderer)
       vtable.renderer_disconnect = meta_renderer_native_disconnect;
       vtable.renderer_create_dma_buf = meta_renderer_native_create_dma_buf;
 
-      vtable.context_get_clock_time = meta_renderer_native_get_clock_time;
-
       vtable_inited = TRUE;
     }