fault-monitor: fix clang warnings

Fix the following clang-warnings:
```
fault-monitor/operational-status-monitor.hpp:36:14: error: explicitly defaulted move assignment operator is implicitly deleted [clang-diagnostic-defaulted-function-deleted]
   36 |     Monitor& operator=(Monitor&&) = default;
      |              ^
fault-monitor/operational-status-monitor.hpp:56:23: note: move assignment operator of 'Monitor' is implicitly deleted because field 'bus' is of reference type 'sdbusplus::bus_t &' (aka 'sdbusplus::bus::bus &')
   56 |     sdbusplus::bus_t& bus;
      |                       ^
fault-monitor/operational-status-monitor.hpp:36:37: note: replace 'default' with 'delete'
   36 |     Monitor& operator=(Monitor&&) = default;
      |                                     ^~~~~~~
      |                                     delete
fault-monitor/operational-status-monitor.hpp:50:22: error: lambda capture 'this' is not used [clang-diagnostic-unused-lambda-capture]
   50 |                     [this](sdbusplus::message_t& m) { matchHandler(m); })
      |                      ^~~~
fault-monitor/operational-status-monitor.hpp:56:23: error: private field 'bus' is not used [clang-diagnostic-unused-private-field]
   56 |     sdbusplus::bus_t& bus;
      |                       ^
fault-monitor/operational-status-monitor.hpp:62:17: error: private field 'dBusHandler' is not used [clang-diagnostic-unused-private-field]
   62 |     DBusHandler dBusHandler;
      |                 ^
```

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ia892c5e9c38d3174a18d2d3add8484b73b4a58db
diff --git a/fault-monitor/operational-status-monitor.hpp b/fault-monitor/operational-status-monitor.hpp
index a4a6d74..873b4be 100644
--- a/fault-monitor/operational-status-monitor.hpp
+++ b/fault-monitor/operational-status-monitor.hpp
@@ -33,34 +33,27 @@
     Monitor(const Monitor&) = delete;
     Monitor& operator=(const Monitor&) = delete;
     Monitor(Monitor&&) = default;
-    Monitor& operator=(Monitor&&) = default;
+    Monitor& operator=(Monitor&&) = delete;
 
     /** @brief Add a watch for OperationalStatus.
      *
      *  @param[in] bus -  D-Bus object
      */
     explicit Monitor(sdbusplus::bus_t& bus) :
-        bus(bus),
         matchSignal(bus,
                     "type='signal',member='PropertiesChanged', "
                     "interface='org.freedesktop.DBus.Properties', "
                     "sender='xyz.openbmc_project.Inventory.Manager', "
                     "arg0namespace='xyz.openbmc_project.State.Decorator."
                     "OperationalStatus'",
-                    [this](sdbusplus::message_t& m) { matchHandler(m); })
+                    [](sdbusplus::message_t& m) { matchHandler(m); })
 
     {}
 
   private:
-    /** @brief sdbusplus D-Bus connection. */
-    sdbusplus::bus_t& bus;
-
     /** @brief sdbusplus signal matches for Monitor */
     sdbusplus::bus::match_t matchSignal;
 
-    /** DBusHandler class handles the D-Bus operations */
-    DBusHandler dBusHandler;
-
     /**
      * @brief Callback handler that gets invoked when the PropertiesChanged
      *        signal is caught by this app. Message is scanned for Inventory