Comment out tmux config that's not supported in OpenBSD 6.6.

Not sure what the deal is here (IIRC I copied this config for colors
from somewhere). I'll deal with it some other time.

.tmux.conf

@@ -6,25 +6,25 @@ set -g set-titles-string '#T'
 # default statusbar colors
 set-option -g status-bg black #base02
 set-option -g status-fg yellow #yellow
-set-option -g status-attr default
+## set-option -g status-attr default
 
 # default window title colors
-set-window-option -g window-status-fg brightblue #base0
+## set-window-option -g window-status-fg brightblue #base0
 set-window-option -g window-status-bg default
 #set-window-option -g window-status-attr dim
 
 # active window title colors
-set-window-option -g window-status-current-fg brightred #orange
+## set-window-option -g window-status-current-fg brightred #orange
 set-window-option -g window-status-current-bg default
 #set-window-option -g window-status-current-attr bright
 
 # pane border
-set-option -g pane-border-fg black #base02
-set-option -g pane-active-border-fg brightgreen #base01
+## set-option -g pane-border-fg black #base02
+## set-option -g pane-active-border-fg brightgreen #base01
 
 # message text
-set-option -g message-bg black #base02
-set-option -g message-fg brightred #orange
+## set-option -g message-bg black #base02
+## set-option -g message-fg brightred #orange
 
 # pane number display
 set-option -g display-panes-active-colour blue #blue