Xorg.0.Log spammed with mtrack Debug output

[wmzart]

On following version:

compiled for 1.18.4, module version = 0.2.0
Module class: X.Org XInput Driver
ABI class: X.Org XInput driver, version 22.1

If I want to analyze the file /var/log/Xorg.0.log, I see a lot of Debug output from src/mtstate.c:

(II) mtrack[1] src/mtstate.c:161: (II) x=512 y=1960 out=5 w=4416 h=3656
(II) mtrack[2] src/mtstate.c:161: (II) x=520 y=1932 out=5 w=4416 h=3656
(II) mtrack[3] src/mtstate.c:161: (II) x=520 y=1932 out=5 w=4416 h=3656
...
(II) mtrack[4152] src/mtstate.c:161: (II) x=551 y=1857 out=5 w=4416 h=3656
(II) mtrack[4153] src/mtstate.c:161: (II) x=554 y=1839 out=5 w=4416 h=3656
...

In the source file src/mtstate.c on line 161, the following is written:
LOG_INFO2(ENABLED, "x=%i y=%i out=%i w=%i h=%i\n", x,y,out,w,h);

Apart from commenting out this line, how can one suppress this officially?

Thanks in advance.
Marc