delete old update_nvim_plugins

.config/fish/functions/update_nvim_plugins.fish

@@ -1,19 +0,0 @@
-# This function updates neovim plugins.
-# This is more or less just a workaround until packer can support my exotic setup.
-
-function update_nvim_plugins
-    set prevdir (pwd)
-
-    set packdir ~/.local/share/nvim/site/pack/packer/
-    cd $packdir
-
-    for d in (fd '\.git$' --hidden --type directory)
-        cd $d/..
-        # reset is needed because of compiled lua files
-        git reset --hard HEAD
-        git pull
-        cd $packdir
-    end
-
-    cd $prevdir
-end