remove deprecated NAME_KEY

[bekzod]

No description provided.

[rwjblue]

packages/@ember/-internals/utils/index.ts:42:1 - error TS6133: 'symbol' is declared but its value is never read.
42 import symbol from './lib/symbol';
   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Found 1 error.

[bekzod]

Thanks @rwjblue , fixed issue above and test passing

[pzuraq]

thanks @bekzod!