Remove redundant LongLivedObject import in RCTTurboModule.mm (#41368)

Summary:
Similarly to #36391 , we found that this import was periodically causing issues for our builds. We applied this patch and found that it is solving the issue, thus raising the PR here.

It may potentially be related to #35664 and #41281

## Changelog:

[IOS] [FIXED] - Unbreak Cocoapods build

Pull Request resolved: #41368

Test Plan: Automated test builds should be able to spot out potential issues.

Reviewed By: javache

Differential Revision: D51117316

Pulled By: cipolleschi

fbshipit-source-id: 5c8ee35ab38539ae1f5556202bb274566adf09b3

packages/react-native/ReactCommon/react/nativemodule/core/platform/ios/ReactCommon/RCTTurboModule.mm

@@ -14,7 +14,6 @@
 #import <React/RCTModuleMethod.h>
 #import <React/RCTUtils.h>
 #import <ReactCommon/CallInvoker.h>
-#import <ReactCommon/LongLivedObject.h>
 #import <ReactCommon/TurboModule.h>
 #import <ReactCommon/TurboModulePerfLogger.h>
 #import <cxxreact/SystraceSection.h>