chore: remove antigravity wrapper (filtered error no longer exists, use agy directly)

functions/antigravity.fish

@@ -1,19 +0,0 @@
-# Copyright (C) 2026 Rootiest
-# SPDX-License-Identifier: AGPL-3.0-or-later
-
-# SYNOPSIS
-#   antigravity [args...]
-#
-# DESCRIPTION
-#   Wrapper for the agy Antigravity AI CLI that filters a known noisy warning
-#   about an unrecognized 'app' option from stderr.
-#
-# ARGUMENTS
-#   args...  Arguments passed through to the agy command
-#
-# EXAMPLE
-#   antigravity chat
-function antigravity --wraps='agy' --description 'alias antigravity=agy'
-    # In fish, we pipe stderr using '2>|' to another command
-    agy $argv 2>| grep -v "'app' is not in the list of known options" >&2
-end