drop compat with Xserver < 21.0

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>

src/emuMB.c

@@ -185,11 +185,7 @@ EvdevMBEmuTimer(InputInfoPtr pInfo)
     int id;
     int mapped_id;
 
-#if HAVE_THREADED_INPUT
     input_lock();
-#else
-    int sigstate = xf86BlockSIGIO();
-#endif
 
     pEvdev->emulateMB.pending = FALSE;
     if ((id = stateTab[pEvdev->emulateMB.state][4][0]) != 0) {
@@ -205,11 +201,7 @@ EvdevMBEmuTimer(InputInfoPtr pInfo)
                     pEvdev->emulateMB.state);
     }
 
-#if HAVE_THREADED_INPUT
     input_unlock();
-#else
-    xf86UnblockSIGIO(sigstate);
-#endif
     return 0;
 }
 

src/emuThird.c

@@ -87,18 +87,10 @@ Evdev3BEmuTimer(OsTimerPtr timer, CARD32 time, pointer arg)
     EvdevPtr          pEvdev   = pInfo->private;
     struct emulate3B *emu3B    = &pEvdev->emulate3B;
 
-#if HAVE_THREADED_INPUT
     input_lock();
-#else
-    int sigstate = xf86BlockSIGIO();
-#endif
     emu3B->state = EM3B_EMULATING;
     Evdev3BEmuPostButtonEvent(pInfo, emu3B->button, BUTTON_PRESS);
-#if HAVE_THREADED_INPUT
     input_unlock();
-#else
-    xf86UnblockSIGIO(sigstate);
-#endif
     return 0;
 }
 

src/evdev.h

@@ -68,10 +68,6 @@
 #define LED_CNT (LED_MAX+1)
 #endif
 
-#if GET_ABI_MAJOR(ABI_XINPUT_VERSION) >= 23
-#define HAVE_THREADED_INPUT	1
-#endif
-
 #if GET_ABI_MAJOR(ABI_XINPUT_VERSION) >= 24
 #define BLOCK_HANDLER_ARGS     	void *data, void *waitTime
 #define WAKEUP_HANDLER_ARGS	void *data, int i