kernel: Remove linux hack

* Breaks many games, only benefits BB. Tbd

src/core/libraries/kernel/thread_management.cpp

@@ -1002,17 +1002,7 @@ ScePthread PThreadPool::Create() {
         }
     }
 
-#ifdef _WIN64
     auto* ret = new PthreadInternal{};
-#else
-    // TODO: Linux specific hack
-    static u8* hint_address = reinterpret_cast<u8*>(0x7FFFFC000ULL);
-    auto* ret = reinterpret_cast<PthreadInternal*>(
-        mmap(hint_address, sizeof(PthreadInternal), PROT_READ | PROT_WRITE,
-             MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0));
-    hint_address += Common::AlignUp(sizeof(PthreadInternal), 4_KB);
-#endif
-
     ret->is_free = false;
     ret->is_detached = false;
     ret->is_almost_done = false;