remove unused traceHeaders function

packages/hub/src/hub.ts

@@ -387,13 +387,6 @@ export class Hub implements HubInterface {
     return this._callExtensionMethod('startTransaction', context, customSamplingContext);
   }
 
-  /**
-   * @inheritDoc
-   */
-  public traceHeaders(): { [key: string]: string } {
-    return this._callExtensionMethod<{ [key: string]: string }>('traceHeaders');
-  }
-
   /**
    * @inheritDoc
    */

packages/tracing/src/hubextensions.ts

@@ -15,20 +15,6 @@ import { IdleTransaction } from './idletransaction';
 import { Transaction } from './transaction';
 import { hasTracingEnabled } from './utils';
 
-/** Returns all trace headers that are currently on the top scope. */
-function traceHeaders(this: Hub): { [key: string]: string } {
-  const scope = this.getScope();
-  if (scope) {
-    const span = scope.getSpan();
-    if (span) {
-      return {
-        'sentry-trace': span.toTraceparent(),
-      };
-    }
-  }
-  return {};
-}
-
 /**
  * Makes a sampling decision for the given transaction and stores it on the transaction.
  *
@@ -216,9 +202,6 @@ export function _addTracingExtensions(): void {
   if (!carrier.__SENTRY__.extensions.startTransaction) {
     carrier.__SENTRY__.extensions.startTransaction = _startTransaction;
   }
-  if (!carrier.__SENTRY__.extensions.traceHeaders) {
-    carrier.__SENTRY__.extensions.traceHeaders = traceHeaders;
-  }
 }
 
 /**

packages/types/src/hub.ts

@@ -177,9 +177,6 @@ export interface Hub {
   /** Returns the integration if installed on the current client. */
   getIntegration<T extends Integration>(integration: IntegrationClass<T>): T | null;
 
-  /** Returns all trace headers that are currently on the top scope. */
-  traceHeaders(): { [key: string]: string };
-
   /**
    * @deprecated No longer does anything. Use use {@link Transaction.startChild} instead.
    */