[Yellowstone][Mammoth] Delete unused cpp code.

lib/mammoth/sync/mutex.cpp

@@ -1,31 +0,0 @@
-#include "sync/mutex.h"
-
-#include <zcall.h>
-
-namespace mmth {
-
-Mutex::Mutex(Mutex&& other) : mutex_cap_(other.mutex_cap_) {
-  other.mutex_cap_ = 0;
-}
-
-Mutex& Mutex::operator=(Mutex&& other) {
-  // TODO: Release existing mutex if it exists.
-  mutex_cap_ = other.mutex_cap_;
-  other.mutex_cap_ = 0;
-  return *this;
-}
-
-glcr::ErrorOr<Mutex> Mutex::Create() {
-  z_cap_t mutex_cap;
-  RET_ERR(ZMutexCreate(&mutex_cap));
-  return Mutex(mutex_cap);
-}
-
-glcr::ErrorCode Mutex::Lock() {
-  return static_cast<glcr::ErrorCode>(ZMutexLock(mutex_cap_));
-}
-glcr::ErrorCode Mutex::Release() {
-  return static_cast<glcr::ErrorCode>(ZMutexRelease(mutex_cap_));
-}
-
-}  // namespace mmth

lib/mammoth/sync/mutex.h

@@ -1,25 +0,0 @@
-#pragma once
-
-#include <glacier/status/error_or.h>
-#include <ztypes.h>
-
-namespace mmth {
-
-class Mutex {
- public:
-  Mutex(const Mutex&) = delete;
-  Mutex(Mutex&&);
-  Mutex& operator=(Mutex&&);
-
-  static glcr::ErrorOr<Mutex> Create();
-
-  glcr::ErrorCode Lock();
-  glcr::ErrorCode Release();
-
- private:
-  z_cap_t mutex_cap_;
-
-  Mutex(z_cap_t mutex_cap) : mutex_cap_(mutex_cap) {}
-};
-
-}  // namespace mmth