linux-user: Remove qemu_host_page_size from elf_core_dump

Used only once in wmr_page_unprotect_regions.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index d2919a4..cc2013c 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -4292,7 +4292,7 @@
                                       target_ulong end, unsigned long flags)
 {
     if ((flags & (PAGE_WRITE | PAGE_WRITE_ORG)) == PAGE_WRITE_ORG) {
-        size_t step = MAX(TARGET_PAGE_SIZE, qemu_host_page_size);
+        size_t step = MAX(TARGET_PAGE_SIZE, qemu_real_host_page_size());
 
         while (1) {
             page_unprotect(start, 0);