tmux: Do not enter copy-mode with Escape

I rarely use this binding as by now I have the muscle memory of `<C-a>[`
to enter copy-mode and since my brain thinks that I can press Escape if
I accidentally press the prefix and I get disappointed every time.

.config/tmux/tmux.conf

@@ -110,7 +110,7 @@ bind -n M-0 select-window -T -t 10
 # Vim-bindings
 
 # Enter copy-mode with Escape
-bind Escape copy-mode
+# bind Escape copy-mode
 
 # Start selection (i.e. visual mode) with `v`, and rectangle selection (i.e.
 # visual block mode) with `C-v`