Remove useless includes of khash.h

* These files were already converted to BOpenHashTable.
* For #9552.

src/add-ons/kernel/network/protocols/ipv6/ipv6.cpp

@@ -24,7 +24,6 @@
 #include <KernelExport.h>
 #include <util/AutoLock.h>
 #include <util/list.h>
-#include <util/khash.h>
 #include <util/DoublyLinkedList.h>
 #include <util/MultiHashTable.h>
 

src/system/kernel/device_manager/IOSchedulerSimple.cpp

@@ -14,7 +14,6 @@
 
 #include <algorithm>
 
-#include <khash.h>
 #include <lock.h>
 #include <thread_types.h>
 #include <thread.h>

src/system/kernel/module.cpp

@@ -32,7 +32,6 @@
 #include <safemode.h>
 #include <syscalls.h>
 #include <util/AutoLock.h>
-#include <util/khash.h>
 #include <util/Stack.h>
 #include <vfs.h>
 

src/system/kernel/posix/realtime_sem.cpp

@@ -20,8 +20,8 @@
 #include <thread.h>
 #include <util/atomic.h>
 #include <util/AutoLock.h>
-#include <util/khash.h>
 #include <util/OpenHashTable.h>
+#include <util/StringHash.h>
 
 
 class SemInfo {

src/system/kernel/scheduler/scheduling_analysis.cpp

@@ -10,7 +10,6 @@
 #include <scheduler_defs.h>
 #include <tracing.h>
 #include <util/AutoLock.h>
-#include <util/khash.h>
 
 #include "scheduler_tracing.h"
 

src/system/kernel/slab/Slab.cpp

@@ -25,7 +25,6 @@
 #include <tracing.h>
 #include <util/AutoLock.h>
 #include <util/DoublyLinkedList.h>
-#include <util/khash.h>
 #include <vm/vm.h>
 #include <vm/VMAddressSpace.h>
 

src/system/kernel/vm/VMCache.cpp

@@ -23,7 +23,6 @@
 #include <slab/Slab.h>
 #include <smp.h>
 #include <tracing.h>
-#include <util/khash.h>
 #include <util/AutoLock.h>
 #include <vfs.h>
 #include <vm/vm.h>

src/system/kernel/vm/vm.cpp

@@ -47,7 +47,6 @@
 #include <team.h>
 #include <tracing.h>
 #include <util/AutoLock.h>
-#include <util/khash.h>
 #include <vm/vm_page.h>
 #include <vm/vm_priv.h>
 #include <vm/VMAddressSpace.h>