Drop .packit.yaml

This repo is already hooked to the @CoreOS/continuous COPR repo for
multi-arch RPM builds of the latest commits.

It's possible we will use Packit in the future to help with the release
process. But for now, let's just drop this file since it's not needed
and the Packit failures are marking git main CI as failed.

.packit.yaml

@@ -1,24 +0,0 @@
-# build into f34-coreos-continuous on every commit to main
-jobs:
-    - job: copr_build
-      trigger: commit
-      metadata:
-        branch: main
-        owner: "@CoreOS"
-        project: continuous
-        targets:
-        - centos-stream-8-aarch64
-        - centos-stream-8-x86_64
-        - fedora-all-aarch64
-        - fedora-all-s390x
-        - fedora-all
-specfile_path: ostree.spec
-actions:
-    create-archive:
-        - "./ci/make-git-snapshot.sh"
-        - "bash -c 'ls ostree-*.tar'"
-    # https://packit.dev/faq/#how-can-i-download-rpm-spec-file-if-it-is-not-part-of-upstream-repository
-    post-upstream-clone:
-        - "curl -LO https://src.fedoraproject.org/rpms/ostree/raw/rawhide/f/ostree.spec"
-        # we don't want any downstream patches
-        - "sed -ie 's/^Patch/# Patch/g' ostree.spec"