Remove backup files from dotfiles

.config/fish/conf.d/fish_frozen_key_bindings.fish.bak

@@ -1,14 +0,0 @@
-# This file was created by fish when upgrading to version 4.3, to migrate
-# the 'fish_key_bindings' variable from its old default scope (universal)
-# to its new default scope (global).  We recommend you delete this file
-# and configure key bindings in ~/.config/fish/config.fish if needed.
-
-# set --global fish_key_bindings fish_default_key_bindings
-
-# Prior to version 4.3, fish shipped an event handler that runs
-# `set --universal fish_key_bindings fish_default_key_bindings`
-# whenever the fish_key_bindings variable is erased.
-# This means that as long as any fish < 4.3 is still running on this system,
-# we cannot complete the migration.
-# As a workaround, erase the universal variable at every shell startup.
-set --erase --universal fish_key_bindings