stubs: merge all monitor stubs in one file, remove monitor_cur_is_qmp stub

monitor_cur_is_qmp was previously used by other stubs, but it's not
since 397d30e ("qemu-error: remove dependency of stubs on monitor",
2016-11-01).

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

stubs/Makefile.objs

@@ -15,7 +15,6 @@ stub-obj-y += fdset-find-fd.o
 stub-obj-y += fdset-get-fd.o
 stub-obj-y += fdset-remove-fd.o
 stub-obj-y += gdbstub.o
-stub-obj-y += get-fd.o
 stub-obj-y += get-next-serial.o
 stub-obj-y += get-vm-name.o
 stub-obj-y += iothread.o
@@ -23,8 +22,7 @@ stub-obj-y += iothread-lock.o
 stub-obj-y += is-daemonized.o
 stub-obj-y += machine-init-done.o
 stub-obj-y += migr-blocker.o
-stub-obj-y += mon-is-qmp.o
-stub-obj-y += monitor-init.o
+stub-obj-y += monitor.o
 stub-obj-y += notify-event.o
 stub-obj-y += qtest.o
 stub-obj-y += replay.o

stubs/mon-is-qmp.c

@@ -1,10 +0,0 @@
-#include "qemu/osdep.h"
-#include "qemu-common.h"
-#include "monitor/monitor.h"
-
-Monitor *cur_mon;
-
-bool monitor_cur_is_qmp(void)
-{
-    return false;
-}

stubs/monitor-init.c

@@ -1,7 +0,0 @@
-#include "qemu/osdep.h"
-#include "qemu-common.h"
-#include "monitor/monitor.h"
-
-void monitor_init(CharDriverState *chr, int flags)
-{
-}

stubs/monitor.c

@@ -3,8 +3,14 @@
 #include "qemu-common.h"
 #include "monitor/monitor.h"
 
+Monitor *cur_mon = NULL;
+
 int monitor_get_fd(Monitor *mon, const char *name, Error **errp)
 {
     error_setg(errp, "only QEMU supports file descriptor passing");
     return -1;
 }
+
+void monitor_init(CharDriverState *chr, int flags)
+{
+}