Revert "kernel: Various improvements to scheduler"

src/core/hle/kernel/kernel.h

@@ -146,9 +146,6 @@ public:
     /// Gets the an instance of the respective physical CPU core.
     const Kernel::PhysicalCore& PhysicalCore(std::size_t id) const;
 
-    /// Gets the current physical core index for the running host thread.
-    std::size_t CurrentPhysicalCoreIndex() const;
-
     /// Gets the sole instance of the Scheduler at the current running core.
     Kernel::KScheduler* CurrentScheduler();