Remove some unused MM functions.

These were just Q&D hacks I used while bringing up the paging code.

Kernel/MemoryManager.cpp

@@ -207,18 +207,6 @@ Vector<PhysicalAddress> MemoryManager::allocatePhysicalPages(size_t count)
     return pages;
 }
 
-byte* MemoryManager::quickMapOnePage(PhysicalAddress physicalAddress)
-{
-    ASSERT_INTERRUPTS_DISABLED();
-    auto pte = ensurePTE(m_kernel_page_directory, LinearAddress(4 * MB));
-    kprintf("MM: quickmap %x @ %x {pte @ %p}\n", physicalAddress.get(), 4*MB, pte.ptr());
-    pte.setPhysicalPageBase(physicalAddress.pageBase());
-    pte.setPresent(true);
-    pte.setWritable(true);
-    flushTLB(LinearAddress(4 * MB));
-    return (byte*)(4 * MB);
-}
-
 void MemoryManager::enter_kernel_paging_scope()
 {
     InterruptDisabler disabler;
@@ -420,24 +408,3 @@ bool MemoryManager::mapRegionsForTask(Task& task)
     }
     return true;
 }
-
-bool copyToZone(Zone& zone, const void* data, size_t size)
-{
-    if (zone.size() < size) {
-        kprintf("MM: copyToZone: can't fit %u bytes into zone with size %u\n", size, zone.size());
-        return false;
-    }
-
-    InterruptDisabler disabler;
-    auto* dataptr = (const byte*)data;
-    size_t remaining = size;
-    for (size_t i = 0; i < zone.m_pages.size(); ++i) {
-        byte* dest = MM.quickMapOnePage(zone.m_pages[i]);
-        kprintf("memcpy(%p, %p, %u)\n", dest, dataptr, min(PAGE_SIZE, remaining));
-        memcpy(dest, dataptr, min(PAGE_SIZE, remaining));
-        dataptr += PAGE_SIZE;
-        remaining -= PAGE_SIZE;
-    }
-
-    return true;
-}

Kernel/MemoryManager.h

@@ -25,14 +25,11 @@ public:
 
 private:
     friend class MemoryManager;
-    friend bool copyToZone(Zone&, const void* data, size_t);
     explicit Zone(Vector<PhysicalAddress>&&);
 
     Vector<PhysicalAddress> m_pages;
 };
 
-bool copyToZone(Zone&, const void* data, size_t);
-
 #define MM MemoryManager::the()
 
 class MemoryManager {
@@ -49,9 +46,6 @@ public:
 
     RetainPtr<Zone> createZone(size_t);
 
-    // HACK: don't use this jeez :(
-    byte* quickMapOnePage(PhysicalAddress);
-
     bool mapSubregion(Task&, Task::Subregion&);
     bool unmapSubregion(Task&, Task::Subregion&);