configs: remove conflicting duplicate INI keys (first occurrence wins)

LinuxCNC's INI reader returns the first occurrence of a key within a
section (IniFile::findTag with num=1), so a second line with the same key
in the same section is silently ignored. Several shipped sim/demo configs
contain such duplicates where the later value is dead -- in a couple of
cases masking the author's evident intent. The first-wins behaviour was
confirmed on 2.10 with `inivar` and the linuxcnc.ini Python reader.

- sim/axis/gladevcp/probe.ini: [RS274NGC] SUBROUTINE_PATH was set twice, so
  the second value (../../nc_files/gladevcp_lib -- the gladevcp demo's
  O-word subs) was ignored and those subs were unreachable. Merge both into
  one colon-separated SUBROUTINE_PATH.
- sim/woodpecker/woodpecker_xyzab.ini: [DISPLAY] GEOMETRY = xyzab (added for
  this 5-axis variant) was overridden by a leftover XYZABCUVW; make xyzab
  effective. Also drop a duplicate [RS274NGC] PARAMETER_FILE.
- sim/woodpecker/woodpecker_xyza.ini: drop a pasted-twice spindle-override
  block ([DISPLAY] MIN/MAX_SPINDLE_0_OVERRIDE).
- sim/axis/histogram_demo.ini, ini_hal_demo.ini: drop a stray second
  [TRAJ] MAX_LINEAR_VELOCITY (1.2345) after 1.2.
- sim/axis/vismach/5axis/bridgemill/5axis.ini: drop a redundant
  [TRAJ] MAX_ANGULAR_VELOCITY (360, identical to 360.0).

Author: PeterStolz

configs/sim/axis/gladevcp/probe.ini

@@ -30,10 +30,11 @@ jpg = image-to-gcode
 py = python3
 
 [RS274NGC]
-SUBROUTINE_PATH= .
+# '.' plus the gladevcp Demo specific Oword subs dir. These must be a single
+# colon-separated SUBROUTINE_PATH: LinuxCNC reads only the first occurrence of
+# an INI key, so a second SUBROUTINE_PATH line is silently ignored.
+SUBROUTINE_PATH = .:../../nc_files/gladevcp_lib
 PARAMETER_FILE = sim.var
-# gladevcp Demo specific Oword subs live here
-SUBROUTINE_PATH = ../../nc_files/gladevcp_lib
 
 [EMCMOT]
 EMCMOT = motmod

configs/sim/axis/histogram_demo.ini

@@ -55,7 +55,6 @@ LINEAR_UNITS        = inch
 ANGULAR_UNITS       = degree
 DEFAULT_LINEAR_VELOCITY = 1.2
 MAX_LINEAR_VELOCITY = 1.2
-MAX_LINEAR_VELOCITY = 1.2345
 
 [EMCIO]
 TOOL_TABLE           = sim.tbl

configs/sim/axis/ini_hal_demo.ini

@@ -58,7 +58,6 @@ LINEAR_UNITS        = inch
 ANGULAR_UNITS       = degree
 DEFAULT_LINEAR_VELOCITY = 1.2
 MAX_LINEAR_VELOCITY = 1.2
-MAX_LINEAR_VELOCITY = 1.2345
 
 [EMCIO]
 TOOL_TABLE           = sim.tbl

configs/sim/axis/vismach/5axis/bridgemill/5axis.ini

@@ -62,7 +62,6 @@ DEFAULT_LINEAR_VELOCITY = 200.0
 MAX_LINEAR_VELOCITY = 346.0
 MAX_LINEAR_ACCELERATION = 800.0
 DEFAULT_LINEAR_ACCELERATION = 800.0
-MAX_ANGULAR_VELOCITY = 360
 
 [EMCIO]
 TOOL_TABLE = 5axis.tbl

configs/sim/woodpecker/woodpecker_xyza.ini

@@ -21,8 +21,6 @@ DEFAULT_SPINDLE_0_SPEED = 12000
 SPINDLE_INCREMENT = 200
 MIN_SPINDLE_0_SPEED = 1000
 MAX_SPINDLE_0_SPEED = 20000
-MIN_SPINDLE_0_OVERRIDE =  0.5
-MAX_SPINDLE_0_OVERRIDE =  1.5
 # linear
 MIN_LINEAR_VELOCITY     = 0
 MAX_LINEAR_VELOCITY     = 60.00

configs/sim/woodpecker/woodpecker_xyzab.ini

@@ -11,7 +11,7 @@ DISPLAY = qtvcp -f woodpecker
 PREFERENCE_FILE_PATH = WORKINGFOLDER/woodpecker.pref
 POSITION_OFFSET = RELATIVE
 POSITION_FEEDBACK = ACTUAL
-GEOMETRY = XYZABCUVW
+GEOMETRY = xyzab
 GRIDS = 10mm 20mm 50mm 100mm 1in 2in 5in 10in
 MAX_FEED_OVERRIDE  = 1.2
 #spindle
@@ -47,7 +47,6 @@ MACHINE_LOG_PATH = machine_log.dat
 LOG_FILE = woodpecker.log
 TOOL_EDITOR = tooledit
 CONFIRM_EXIT = True
-GEOMETRY = xyzab
 
 MACRO = auto_tool_zero auto_tool_zero
 MACRO = go_to_zero go_to_zero
@@ -81,7 +80,6 @@ TOOL_TABLE = tool.tbl
 PARAMETER_FILE = woodpecker.var
 RS274NGC_STARTUP_CODE = G17 G21 G40 G43H0 G54 G64P0.005 G80 G90 G94 G97 M5 M9
 SUBROUTINE_PATH = /home/.../linuxcnc/nc_files/probe/basic_probe/macros:~/linuxcnc/nc_files/examples/ngcgui_lib:~/linuxcnc/nc_files/examples/ngcgui_lib/utilitysubs
-PARAMETER_FILE  = metric_parameters.txt
 FEATURES=12
 
 [EMCMOT]