[hle][core] Hang Freeze Fix - Video Fixes - Revert Microsleep (#4316) (#4525)

- [x] I have read and followed the [Contribution Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/CONTRIBUTING.md#code-contributions).
- [x] I have read and followed the [AI Policy](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/AI.md)
- [x] I have read and followed the [Coding Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/Coding.md) to the best of my ability.

-------------------

Credit: amicuchu
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

- Fixes Mario Strikers Intro Freezing from legacy.
- Microsleep no longer needed for Absolum Video freezing and other videos freezing.
- Revert `[service, nvhost] added machinery to allow microsleep between nvdec read requests to avoid guest panic in some games #4316`
- Tested with CPU/GPU decoding on Linux/Windows.
Special thanks to xbzk

<video src="/attachments/9f4a4494-78ee-4b65-ad26-628e83d5c83b" title="strikers" controls></video>

Co-authored-by: Your Name <John@John.localdomain>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4525
Reviewed-by: Maufeat <sahyno1996@gmail.com>
Reviewed-by: Shinmegumi <shinmegumi@eden-emu.dev>

src/core/hle/service/service.h

@@ -107,8 +107,6 @@ protected:
     Core::System& system;
     /// Identifier string used to connect to the service.
     const char* service_name;
-    /// Whether this is the IStorage service.
-    const bool is_i_storage;
     /// Function used to safely up-cast pointers to the derived class before invoking a handler.
     InvokerFn* handler_invoker;
     /// Maximum number of concurrent sessions that this service can handle.