Remove gating.yaml to fix smoke test gating

The smoke test runs and passes under osci.brew-build.tier0.functional,
but gating.yaml expects results under a separate testcase (OSCI-8144).
Removing gating.yaml lets OSCI handle gating automatically via tier0.

Resolves: RHEL-178224 - https://redhat.atlassian.net/browse/RHEL-178224

gating.yaml

@@ -1,6 +0,0 @@
---- !Policy
-product_versions:
-  - rhel-9
-decision_context: osci_compose_gate
-rules:
-  - !PassingTestCaseRule {test_case_name: osci.brew-build./tests/tmt/plans/smoke}   # this is the testcase identifier, which OSCI pipeline uses

rust-afterburn.spec

@@ -8,7 +8,7 @@
 
 Name:           rust-%{crate}
 Version:        5.10.0
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Simple cloud provider agent (RHEL CoreOS only)
 
 # Upstream license specification: Apache-2.0