Remove fly.toml from repo

As a general rule, this probably shouldn't be in the main repo. I've
also deleted the Fly app, so it doesn't need to exist anywhere.

fly.toml

@@ -1,25 +0,0 @@
-# fly.toml app configuration file generated for boids-autumn-lake-5810 on 2025-09-03T16:02:00-05:00
-#
-# See https://fly.io/docs/reference/configuration/ for information about how to use this file.
-#
-
-app = 'boids-autumn-lake-5810'
-primary_region = 'ord'
-
-[build]
-
-[env]
-  PORT = '8080'
-
-[http_service]
-  internal_port = 8080
-  force_https = true
-  auto_stop_machines = 'stop'
-  auto_start_machines = true
-  min_machines_running = 0
-  processes = ['app']
-
-[[vm]]
-  memory = '256mb'
-  cpu_kind = 'shared'
-  cpus = 1