sim/touchy: disable EMC_DEBUG_TASK_ISSUE logging (DEBUG=0)

touchy.ini was the only sim config shipping a non-zero DEBUG (0x10 =
EMC_DEBUG_TASK_ISSUE). That flag makes task log every issued NML command
as an ASCII string via emcCommandBuffer->msg2str(), which lazily creates
a CMS_DISPLAY_ASCII_UPDATER and prints its scary 'may not function
properly due to range limitations' banner on startup.

The emcCommand buffer is correctly xdr-encoded; the ASCII updater is only
a temporary string-conversion helper for the debug log. Setting DEBUG=0
(matching axis and gmoccapy sims) stops the task-issue logging and the
spurious banner. No functional change to touchy.

Surfaced by the ui-smoke tests (#4054).

Author: grandixximo

configs/sim/touchy/touchy.ini

@@ -10,7 +10,7 @@ MACHINE =               LinuxCNC-TOUCHY
 
 # Debug level, 0 means no messages. See src/emc/nml_int/emcglb.h for others
 #DEBUG =               0x7FFFFFFF
-DEBUG = 0x10
+DEBUG = 0
 
 [DISPLAY]