Remove unnecessary size directive from fly.toml

Author: letam

scripts/configs/fly-sqlite.toml

@@ -30,7 +30,6 @@ console_command = '/code/manage.py shell'
   processes = ['app']
 
 [[vm]]
-  size = 'shared-cpu-1x'
   memory = '512mb'
   cpu_kind = 'shared'
   cpus = 1