Remove Stonewither fan and power supply support

This does the following:

* Removes the D-Bus monitor rules for monitoring fan
  and power supply status.

* Removes the fan control features and packages.

* Removes the MSL (Min Ship Level) checking for the
  MAX31785 fan controller that is no longer present.

Resolves openbmc/openbmc#2700

Change-Id: I5c824d68dd21d090a08044ac84d2f275f58c97b5
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
diff --git a/meta-stonewither/recipes-phosphor/images/obmc-phosphor-image.bbappend b/meta-stonewither/recipes-phosphor/images/obmc-phosphor-image.bbappend
new file mode 100644
index 0000000..5a0e4a3
--- /dev/null
+++ b/meta-stonewither/recipes-phosphor/images/obmc-phosphor-image.bbappend
@@ -0,0 +1,2 @@
+IMAGE_FEATURES_remove = "obmc-fan-control"
+OBMC_IMAGE_EXTRA_INSTALL_remove = "max31785-msl phosphor-msl-verify"