control: Remove storing bus reference on fan objects

Remove the sdbusplus bus reference since its currently not needed within
the JSON fan object.

Change-Id: I2028a0ad4bd1881f0b3d442e063e3785cf9795d5
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
diff --git a/control/json/fan.cpp b/control/json/fan.cpp
index 3fe4aec..7a65da1 100644
--- a/control/json/fan.cpp
+++ b/control/json/fan.cpp
@@ -25,8 +25,7 @@
 using json = nlohmann::json;
 using namespace phosphor::logging;
 
-Fan::Fan(sdbusplus::bus::bus& bus, const json& jsonObj) :
-    ConfigBase(jsonObj), _bus(bus)
+Fan::Fan(sdbusplus::bus::bus& bus, const json& jsonObj) : ConfigBase(jsonObj)
 {
     if (jsonObj.contains("profiles"))
     {
diff --git a/control/json/fan.hpp b/control/json/fan.hpp
index 45bb035..d0f7a06 100644
--- a/control/json/fan.hpp
+++ b/control/json/fan.hpp
@@ -91,9 +91,6 @@
     }
 
   private:
-    /* The sdbusplus bus object */
-    sdbusplus::bus::bus& _bus;
-
     /* The zone this fan belongs to */
     std::string _zone;