remove double emit

Author: AbhiPrasad

packages/core/src/tracing/transaction.ts

@@ -271,8 +271,6 @@ export class Transaction extends SpanClass implements TransactionInterface {
     // Uncomment if we want to make DSC immutable
     // this._frozenDynamicSamplingContext = dsc;
 
-    client.emit && client.emit('createDsc', dsc);
-
     return dsc;
   }