exec: Remove unused global variable phys_ram_fd

It seems to be unused since several years (commit
be995c27640a82c7056b6f53d02ec823570114e5 in 2006).

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Message-id: 1373044036-14443-1-git-send-email-sw@weilnetz.de
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

exec.c

diff --git a/exec.c b/exec.c
index 03fdf7e..485d811 100644
--- a/exec.c
+++ b/exec.c
@@ -53,7 +53,6 @@
 //#define DEBUG_SUBPAGE
 
 #if !defined(CONFIG_USER_ONLY)
-int phys_ram_fd;
 static int in_migration;
 
 RAMList ram_list = { .blocks = QTAILQ_HEAD_INITIALIZER(ram_list.blocks) };

include/exec/cpu-all.h

diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h
index 35bdf85..e791c05 100644
--- a/include/exec/cpu-all.h
+++ b/include/exec/cpu-all.h
@@ -447,7 +447,6 @@
 
 /* memory API */
 
-extern int phys_ram_fd;
 extern ram_addr_t ram_size;
 
 /* RAM is pre-allocated and passed into qemu_ram_alloc_from_ptr */