exec: remove useless declarations from memory-internal.h

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

include/exec/memory-internal.h

diff --git a/include/exec/memory-internal.h b/include/exec/memory-internal.h
index 977467b..1b156fd 100644
--- a/include/exec/memory-internal.h
+++ b/include/exec/memory-internal.h
@@ -49,12 +49,6 @@
 void qemu_ram_free(ram_addr_t addr);
 void qemu_ram_free_from_ptr(ram_addr_t addr);
 
-struct MemoryRegion;
-struct MemoryRegionSection;
-
-void qemu_register_coalesced_mmio(hwaddr addr, ram_addr_t size);
-void qemu_unregister_coalesced_mmio(hwaddr addr, ram_addr_t size);
-
 #define VGA_DIRTY_FLAG       0x01
 #define CODE_DIRTY_FLAG      0x02
 #define MIGRATION_DIRTY_FLAG 0x08