Remove move constructor in Watch class

The Watch class is not moveable since the this ptr is passed to
sd_event_add_io for context. After a move, systemd context will
be pointing at something random.

Based on feedback on
https://gerrit.openbmc-project.xyz/#/c/6718/7/watch.hpp@35

Change-Id: Idbed233bf84c814d76899dac4fa097c1ee8915f4
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/watch.hpp b/watch.hpp
index b118d59..99854b7 100644
--- a/watch.hpp
+++ b/watch.hpp
@@ -30,8 +30,8 @@
 
         Watch(const Watch&) = delete;
         Watch& operator=(const Watch&) = delete;
-        Watch(Watch&&) = default;
-        Watch& operator=(Watch&&) = default;
+        Watch(Watch&&) = delete;
+        Watch& operator=(Watch&&) = delete;
 
         /** @brief dtor - remove inotify watch and close fd's
          */