Revert "sdl: I can't believe it's more version-guards"

This reverts commit fdb6f2af.

src/sdl/i_gamepad.c

@@ -103,7 +103,6 @@ INT32 I_NumGamepads(void)
 #define USB_PRODUCT_XBOX_SERIES_X_POWERA_FUSION_PRO2        0x4001
 #define USB_PRODUCT_XBOX_SERIES_X_POWERA_SPECTRA            0x4002
 
-#if SDL_VERSION_ATLEAST(2,0,6)
 static boolean IsJoystickXboxOneElite(Uint16 vendor_id, Uint16 product_id)
 {
 	if (vendor_id == USB_VENDOR_MICROSOFT) {
@@ -142,7 +141,6 @@ static boolean IsJoystickXboxSeriesXS(Uint16 vendor_id, Uint16 product_id)
 
 	return false;
 }
-#endif
 
 // Opens a controller device
 static boolean Controller_OpenDevice(UINT8 which, INT32 devindex)
@@ -887,7 +885,6 @@ boolean I_SetGamepadSmallMotorFreq(UINT8 which, fixed_t freq)
 
 void I_SetGamepadRumblePaused(UINT8 which, boolean pause)
 {
-#if SDL_VERSION_ATLEAST(2,0,9)
 	if (!I_RumbleSupported() || which >= NUM_GAMEPADS)
 		return;
 
@@ -918,11 +915,6 @@ void I_SetGamepadRumblePaused(UINT8 which, boolean pause)
 	}
 
 	controller->info->rumble.paused = pause;
-#else
-	(void)which;
-	(void)pause;
-	return;
-#endif
 }
 
 boolean I_GetGamepadRumbleSupported(UINT8 which)