build-and-provide-package: make sure to remove pbuilderrc
build-and-provide-package: make sure to remove pbuilderrc

Remove pbuilderrc in the shell's exit handler, so that it
will be removed in all cases, in particular error paths.

Signed-off-by: André Draszik <46f1a0bd5592a2f9244ca321b129902a06b53e03@andred.net>

hashar/jenkins-debian-glue,tonin/jenkins-debian-glue,tonin/jenkins-debian-glue,mika/jenkins-debian-glue,linuxmaniac/jenkins-debian-glue,wikimedia/operations-debs-jenkins-debian-glue,hashar/jenkins-debian-glue,wikimedia/operations-debs-jenkins-debian-glue,kartikm/jenkins-debian-glue,kartikm/jenkins-debian-glue,linuxmaniac/jenkins-debian-glue,mika/jenkins-debian-glue