dont need separate get identity functions anymore

src/sdkBase.ts

@@ -84,7 +84,7 @@ export abstract class SdkBase {
     this._callbackManager = new CallbackManager(
       this,
       this._product.name,
-      () => this.getIdentityForCallback(),
+      () => this.getIdentity(),
       this._logger
     );
   }
@@ -170,11 +170,6 @@ export abstract class SdkBase {
     return identity;
   }
 
-  private getIdentityForCallback(): Identity | null {
-    const identity = this._identity ?? this.getIdentityNoInit();
-    return isValidIdentity(identity) && !this.temporarilyUnavailable(identity) ? identity : null;
-  }
-
   // When the SDK has been initialized, this function should return the token
   // from the most recent refresh request, if there is a request, wait for the
   // new token. Otherwise, returns a promise which will be resolved after init.