test: firmware uploadInProgress: writeMeta typo
test: firmware uploadInProgress: writeMeta typo

Typo was that it was originally titled to return success, then
implemented, and really the success is a nice failure.  Read() returns
no data on failure instead of something useful.  writeMeta actually
returns a boolean on failure.  Therefore, this test returns failure.
However, it's returning failure because it doesn't have a data handler.
There is another test already that handles that.

FirmwareHandlerWriteMetaTest.WriteConfigParametersPassedThrough

Signed-off-by: Patrick Venture <36c53fa43f47f3fd67cb2fc38031827244d18a1f@google.com>
Change-Id: If2816b6adee196445cd67b30782635aae214dc06

openbmc/phosphor-ipmi-flash