dbus-test: drop incompatible test suite fix patch

This patch is to drop the incompatible patch to fix test suite
preparation.It was applicable to dbus-ptest:1.6.10 and not needed
now in dbus-test:1.8.2

Also drop the asserts and checks disabling flags,
these are now not needed for bus test execution.

Signed-off-by: Shrikant Bobade <Shrikant_Bobade@mentor.com>