Turn off Ruby 2.1 Deprecated RUBY_HEAP_MIN_SLOTS Warning

I have some GC settings in my `.bash_profile`: ``` export RUBY_HEAP_MIN_SLOTS=1250000 export RUBY_HEAP_SLOTS_INCREMENT=100000 export RUBY_HEAP_SLOTS_GROWTH_FACTOR=1 export RUBY_GC_MALLOC_LIMIT=30000000 export RUBY_HEAP_FREE_MIN=12500 ``` When I use Ruby 2.1, it's complaining about `RUBY_HEAP_MIN_SLOTS`: ``` /.rvm/rubies/ruby-2.1.0/bin/ruby: warning: RUBY_HEAP_MIN_SLOTS is obsolete. Use RUBY_GC_HEAP_INIT_SLOTS instead. ``` I migrate to `RUBY_GC_HEAP_INIT_SLOTS`, but this warning still shows up. Does anyone know how to turn this off? Am I missing something? Thanks.