Remove extra code

Author: ncooke3

FirebaseCore/Internal/Tests/Unit/HeartbeatStorageTests.swift

@@ -15,33 +15,6 @@
 @testable import FirebaseCoreInternal
 import XCTest
 
-public typealias SessionsSubscriberName = Int
-
-public class SessionsDependencies {
-  #if compiler(>=6)
-    private nonisolated(unsafe) static var _dependencies: Set<SessionsSubscriberName> = .init()
-    private(set) static var dependencies: Set<SessionsSubscriberName> {
-      get {
-        lock.withLock {
-          _dependencies
-        }
-      }
-      set {
-        lock.withLock {
-          _dependencies = newValue
-        }
-      }
-    }
-  #else
-    private static var _dependencies: Set<SessionsSubscriberName> = .init()
-  #endif
-  private static let lock = NSLock()
-
-  public static func addDependency(name: SessionsSubscriberName) {
-    SessionsDependencies.dependencies.insert(name)
-  }
-}
-
 extension HeartbeatsBundle {
   static func testHeartbeatBundle() -> HeartbeatsBundle {
     var heartbeatBundle = HeartbeatsBundle(capacity: 1)
@@ -54,23 +27,6 @@ extension HeartbeatsBundle {
 class HeartbeatStorageTests: XCTestCase {
   // MARK: - Instance Management
 
-//  @MainActor func testStressTest() {
-//    var expectations: [XCTestExpectation] = []
-//    let lock = NSLock()
-//    DispatchQueue.concurrentPerform(iterations: 1000) { i in
-//      lock.lock()
-//      let exp = self.expectation(description: "\(i)")
-//      expectations.append(exp)
-//      defer { exp.fulfill() }
-//      lock.unlock()
-//      SessionsDependencies.addDependency(name: i)
-//      exp.fulfill()
-//    }
-//    DispatchQueue.perform
-//    wait(for: expectations)
-//    XCTAssertEqual(SessionsDependencies.dependencies.count, 1000)
-//  }
-
   func testGettingInstance_WithSameID_ReturnsSameInstance() {
     // Given
     let heartbeatStorage1 = HeartbeatStorage.getInstance(id: "sparky")