Remove unnecessary command check

Test fix complements
https://android-review.googlesource.com/c/platform/system/bt/+/1409768

Bug: 155399771
Test: bluetooth_test_gd
--gtest_filter=LeExtendedAdvertisingManagerTest.create_advertiser_tes
Tag: #gd-refactor

Change-Id: I19f37f82624c4daaeea6a2e8f61fdd92ea442d4a