diff --git a/common/vid_sunx.c b/common/vid_sunx.c
index d24e3ac..c941064 100644
--- a/common/vid_sunx.c
+++ b/common/vid_sunx.c
@@ -1130,23 +1130,6 @@ void VID_SetDefaultMode( void )
 {
 }
 
-int I_OpenWindow(void)
-{
-	return 0;
-}
-
-void I_EraseWindow(int window)
-{
-}
-
-void I_DrawCircle(int window, int x, int y, int r)
-{
-}
-
-void I_DisplayWindow(int window)
-{
-}
-
 void Sys_SendKeyEvents(void)
 {
 // get events from x server
diff --git a/common/vid_sunxil.c b/common/vid_sunxil.c
index 95eacbd..9558d98 100644
--- a/common/vid_sunxil.c
+++ b/common/vid_sunxil.c
@@ -1183,24 +1183,6 @@ void VID_SetDefaultMode( void )
 {
 }
 
-int I_OpenWindow(void)
-{
-	return 0;
-}
-
-void I_EraseWindow(int window)
-{
-
-}
-
-void I_DrawCircle(int window, int x, int y, int r)
-{
-}
-
-void I_DisplayWindow(int window)
-{
-}
-
 void Sys_SendKeyEvents(void)
 {
 	// get events from x server
diff --git a/common/vid_x.c b/common/vid_x.c
index 4444bcd..f928cd1 100644
--- a/common/vid_x.c
+++ b/common/vid_x.c
@@ -960,23 +960,6 @@ void VID_DitherOff(void)
     }
 }
 
-int Sys_OpenWindow(void)
-{
-	return 0;
-}
-
-void Sys_EraseWindow(int window)
-{
-}
-
-void Sys_DrawCircle(int window, int x, int y, int r)
-{
-}
-
-void Sys_DisplayWindow(int window)
-{
-}
-
 void Sys_SendKeyEvents(void)
 {
 // get events from x server