Disabled $mod+Shift+m master-stack shortcut since don't really use it

(found prefer to use the simpler manual $mod+Shift+comma/period).

i3/config

@@ -123,7 +123,7 @@ bindsym $mod+l focus right
 # NOTE: requires 'jq'
 set $get_layout $(i3-msg -t get_tree | jq -r 'recurse(.nodes[];.nodes!=null)|select(.nodes[].focused).layout')
 bindsym $mod+m exec "i3-msg focus parent, focus left"
-bindsym $mod+Shift+m exec "STK=$get_layout; i3-msg layout stacked, move left; MST=$get_layout; i3-msg layout stacked, focus up, focus right, layout $STK, focus parent, focus left, move right, focus left, layout $MST"
+#bindsym $mod+Shift+m exec "STK=$get_layout; i3-msg layout stacked, move left; MST=$get_layout; i3-msg layout stacked, focus up, focus right, layout $STK, focus parent, focus left, move right, focus left, layout $MST"
 bindsym $mod+Shift+comma exec "STK=$get_layout; i3-msg layout stacked, move left, focus parent, focus right, layout $STK, focus parent, focus left"
 bindsym $mod+Shift+period exec "MST=$get_layout; i3-msg layout stacked, move right, focus parent, focus left, layout $MST, focus parent, focus right"
 bindsym $mod+$mod_next+Shift+period exec "MST=$get_layout; i3-msg layout stacked, focus right; STK=$get_layout; i3-msg layout stacked, focus parent, focus left, move right, focus up, layout $STK, focus parent, focus left, layout $MST"

i3/config.simple

@@ -84,7 +84,7 @@ bindsym $mod+l focus right
 # NOTE: requires 'jq'
 set $get_layout $(i3-msg -t get_tree | jq -r 'recurse(.nodes[];.nodes!=null)|select(.nodes[].focused).layout')
 bindsym $mod+m exec "i3-msg focus parent, focus left"
-bindsym $mod+Shift+m exec "STK=$get_layout; i3-msg layout stacked, move left; MST=$get_layout; i3-msg layout stacked, focus up, focus right, layout $STK, focus parent, focus left, move right, focus left, layout $MST"
+#bindsym $mod+Shift+m exec "STK=$get_layout; i3-msg layout stacked, move left; MST=$get_layout; i3-msg layout stacked, focus up, focus right, layout $STK, focus parent, focus left, move right, focus left, layout $MST"
 bindsym $mod+Shift+comma exec "STK=$get_layout; i3-msg layout stacked, move left, focus parent, focus right, layout $STK, focus parent, focus left"
 bindsym $mod+Shift+period exec "MST=$get_layout; i3-msg layout stacked, move right, focus parent, focus left, layout $MST, focus parent, focus right"
 bindsym $mod+$mod_next+Shift+period exec "MST=$get_layout; i3-msg layout stacked, focus right; STK=$get_layout; i3-msg layout stacked, focus parent, focus left, move right, focus up, layout $STK, focus parent, focus left, layout $MST"