Alias only what the machine will actually have

vim aliased to vimx, which no list installed; bat invoked by its Debian
name, which Fedora does not ship; sunshine restarted by an alias when
nothing here installs sunshine. vim-X11 is now declared so vimx exists,
ff previews with bat, and the sunshine alias moved to the gitignored
env of the one machine that has it.

config/bash/aliases

@@ -3,7 +3,6 @@
 # Aliases I like
 alias :q="exit"
 alias :wq="exit"
-alias startsunshine="systemctl --user restart sunshine.service"
 alias sourcerc="source ~/.bashrc"
 alias c="clear"
 alias shutdown="systemctl poweroff"
@@ -32,7 +31,8 @@ alias ls='eza -lh --group-directories-first --icons'
 alias lsa='ls -a'
 alias lt='eza --tree --level=2 --long --icons --git'
 alias lta='lt -a'
-alias ff="fzf --preview 'batcat --style=numbers --color=always {}'"
+# Fedora's bat installs /usr/bin/bat; batcat is the Debian name.
+alias ff="fzf --preview 'bat --style=numbers --color=always {}'"
 
 # Directories
 alias ..='cd ..'