dbus: removed unnecessary is_method_error calls

The sdbusplus `call` methods throw an exception in all cases, so there
is no reason to also check the message reply for `is_method_error`
conditions.

https://github.com/openbmc/sdbusplus/blob/c67e1e8730a2d3dcb155b21ced735ee188e8ea7f/include/sdbusplus/bus.hpp#L283

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Id5697e4186e3a6794292c736e0c3b248c8b57b82
1 file changed