alacritty: remove url session so it doesn't complain.

Not adding anything back because not interested in changing these
defaults.

alacritty/.config/alacritty/alacritty.yml

@@ -337,28 +337,6 @@ mouse:
   # If this is `true`, the cursor is temporarily hidden when typing.
   hide_when_typing: false
 
-  url:
-    # URL launcher
-    #
-    # This program is executed when clicking on a text which is recognized as a URL.
-    # The URL is always added to the command as the last parameter.
-    #
-    # When set to `None`, URL launching will be disabled completely.
-    #
-    # Default:
-    #   - (macOS) open
-    #   - (Linux) xdg-open
-    #   - (Windows) explorer
-    #launcher:
-    #  program: xdg-open
-    #  args: []
-
-    # URL modifiers
-    #
-    # These are the modifiers that need to be held down for opening URLs when clicking
-    # on them. The available modifiers are documented in the key binding section.
-    modifiers: None
-
 selection:
   semantic_escape_chars: ",│`|:\"' ()[]{}<>"