[PATCH for-4.15] tools/libxendevicemodel: Strip __XEN_TOOLS__ header guard

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

This is inappropriate for the header file of a standalone library with stable
API and ABI.

Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
CC: Ian Jackson <iwj@xxxxxxxxxxxxxx>
CC: Wei Liu <wl@xxxxxxx>

Discovered when trying to actually remove the use of unstable libraries from a
trivial userspace emulator.  Current users of xendevicemodel.h inherit
__XEN_TOOLS__ from libxenctrl.h (or equiv).
---
 tools/include/xendevicemodel.h | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/tools/include/xendevicemodel.h b/tools/include/xendevicemodel.h
index 33698d67f3..797e0c6b29 100644
--- a/tools/include/xendevicemodel.h
+++ b/tools/include/xendevicemodel.h
@@ -17,8 +17,6 @@
 #ifndef XENDEVICEMODEL_H
 #define XENDEVICEMODEL_H
 
-#ifdef __XEN_TOOLS__
-
 #include <stdint.h>
 
 #include <xen/xen.h>
@@ -377,8 +375,6 @@ int xendevicemodel_nr_vcpus(
  */
 int xendevicemodel_restrict(xendevicemodel_handle *dmod, domid_t domid);
 
-#endif /* __XEN_TOOLS__ */
-
 #endif /* XENDEVICEMODEL_H */
 
 /*
-- 
2.11.0