Remove mouse options for tmux

Newer versions of tmux give warnings when starting with mouse options
set

tmux.conf

@@ -12,12 +12,6 @@ set -sg escape-time 1
 set -g base-index 1
 set-window-option -g pane-base-index 1
 
-# Mouse options
-set -g mouse-select-pane off
-set -g mouse-resize-pane off
-set -g mouse-select-window off
-setw -g mode-mouse off
-
 # Status
 set -g status-interval 20
 set -g status-utf8 on