buildroot

tpm2-abrmd: don't test if the binary exists in the init script

The test doesn't make sense. Buildroot installs both abrmd and its init
script as part of the same package. But if it ever happens for some
reason, the error message from start-stop-daemon should be pretty clear.

Signed-off-by: Carlos Santos <casantos@datacom.ind.br>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>