Kernel: Remove some dead code and unused includes in SysFS files

Kernel/FileSystem/SysFS.cpp

@@ -7,7 +7,6 @@
 #include <AK/Singleton.h>
 #include <AK/StringView.h>
 #include <Kernel/FileSystem/SysFS.h>
-#include <Kernel/FileSystem/VirtualFileSystem.h>
 #include <Kernel/Sections.h>
 
 namespace Kernel {

Kernel/FileSystem/SysFS.h

@@ -6,14 +6,9 @@
 
 #pragma once
 
-#include <AK/Singleton.h>
-#include <AK/String.h>
-#include <AK/Types.h>
 #include <Kernel/FileSystem/FileSystem.h>
 #include <Kernel/FileSystem/Inode.h>
-#include <Kernel/FileSystem/InodeMetadata.h>
 #include <Kernel/SystemExposed.h>
-#include <Kernel/TTY/SlavePTY.h>
 
 namespace Kernel {
 
@@ -97,7 +92,6 @@ protected:
 
 class SysFSDirectoryInode : public SysFSInode {
     friend class SysFS;
-    friend class SysFSRootDirectoryInode;
 
 public:
     static NonnullRefPtr<SysFSDirectoryInode> create(SysFS const&, SysFSComponent const&);

Kernel/GlobalProcessExposed.cpp

@@ -29,6 +29,7 @@
 #include <Kernel/Net/UDPSocket.h>
 #include <Kernel/ProcessExposed.h>
 #include <Kernel/Sections.h>
+#include <Kernel/TTY/TTY.h>
 
 namespace Kernel {
 

Kernel/SystemExposed.h

@@ -15,7 +15,6 @@
 #include <Kernel/FileSystem/FileSystem.h>
 #include <Kernel/FileSystem/Forward.h>
 #include <Kernel/KResult.h>
-#include <Kernel/UserOrKernelBuffer.h>
 
 namespace Kernel {
 
@@ -48,7 +47,6 @@ public:
     virtual KResultOr<size_t> entries_count() const override { return m_components.size(); };
     virtual KResult traverse_as_directory(unsigned, Function<bool(FileSystem::DirectoryEntryView const&)>) const override;
     virtual RefPtr<SysFSComponent> lookup(StringView name) override;
-    void add_component(SysFSComponent const&);
 
     virtual NonnullRefPtr<Inode> to_inode(SysFS const& sysfs_instance) const override final;