evdev: Drop joystick rejection heurstics

We now no longer add joysticks at all.  They show up as absolute motion
devices without has_button, so we don't add them as a pointer.  We may add
a keyboard for the keyboard-style keys, but that's fine.  With the previous
commit, we no longer generate spurious absolute pointer motion for the abs
axes.

https://bugs.freedesktop.org/show_bug.cgi?id=71687

src/evdev.c

@@ -460,15 +460,6 @@ evdev_configure_device(struct evdev_device *device)
 		ioctl(device->fd, EVIOCGBIT(EV_ABS, sizeof(abs_bits)),
 		      abs_bits);
 
-		if (TEST_BIT(abs_bits, ABS_WHEEL) ||
-		    TEST_BIT(abs_bits, ABS_GAS) ||
-		    TEST_BIT(abs_bits, ABS_BRAKE) ||
-		    TEST_BIT(abs_bits, ABS_HAT0X)) {
-			weston_log("device %s is a joystick, ignoring\n",
-				   device->devnode);
-			return 0;
-		}
-
 		if (TEST_BIT(abs_bits, ABS_X)) {
 			ioctl(device->fd, EVIOCGABS(ABS_X), &absinfo);
 			device->abs.min_x = absinfo.minimum;