KVM Test Bot is randomly hitting 1 hour global timeout

See recent results at https://build.reactos.org/#/builders/6.
I propose to stop some debug prints from "DbgUserDumpHandleTable" for now.
This should allow the test machine to complete most of the time.
The root cause needs to investigated more. We see the following:

(win32ss/user/ntuser/object.c:596) err: Out of user handles!

(win32ss/user/ntuser/object.c:377) err: Out of user handles! Used -> 4096, NM_Handle -> 4096

(win32ss/user/ntuser/object.c:291) err: Total handles count: 4096