kernel/handle_table: Remove usages of the global system instance

Removes even more usages of the global system instance, trimming away
more dependencies on global variables and making them explicit in the
interface.

src/core/hle/kernel/kernel.cpp

@@ -50,7 +50,8 @@ namespace Kernel {
 
 struct KernelCore::Impl {
     explicit Impl(Core::System& system, KernelCore& kernel)
-        : global_scheduler{kernel}, synchronization{system}, time_manager{system}, system{system} {}
+        : global_scheduler{kernel}, synchronization{system}, time_manager{system},
+          global_handle_table{kernel}, system{system} {}
 
     void SetMulticore(bool is_multicore) {
         this->is_multicore = is_multicore;
@@ -307,7 +308,7 @@ struct KernelCore::Impl {
 
     // This is the kernel's handle table or supervisor handle table which
     // stores all the objects in place.
-    Kernel::HandleTable global_handle_table;
+    HandleTable global_handle_table;
 
     /// Map of named ports managed by the kernel, which can be retrieved using
     /// the ConnectToPort SVC.