Staging: hv: vmbus: Get rid of the function dump_gpadl_body()

Get rid of the function dump_gpadl_body() since it adds no value and actually is
in the data path.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>