Merge ~txiao/charm-prometheus-alertmanager:remove_tag into charm-prometheus-alertmanager:master

[Tianqi Xiao]

Remove monitoring tag to deprioritize LMA charms in favor of COS

[🤖 Canonical IS Merge Bot (canonical-is-mergebot)]

This merge proposal is being monitored by mergebot. Change the status to Approved to merge.

[🤖 prod-jenkaas-bootstack (prod-jenkaas-bootstack)]

FAILED: Continuous integration, rev:7ded6a0b07f23d2e00c9ca84495da631e6af87c2
https://jenkins.canonical.com/bootstack/job/lp-charm-prometheus-alertmanager-ci/9/
Executed test runs:
    FAILURE: https://jenkins.canonical.com/bootstack/job/lp-charm-test-unit/328/
    None: https://jenkins.canonical.com/bootstack/job/lp-update-mp/1896/

Click here to trigger a rebuild:
https://jenkins.canonical.com/bootstack/job/lp-charm-prometheus-alertmanager-ci/9//rebuild

review: Needs Fixing (continuous-integration)

[🤖 Canonical IS Merge Bot (canonical-is-mergebot)]

Change successfully merged at revision 1261637a9207e9fe65ec63d9e93c6f2d6d758ac4

diff --git a/src/metadata.yaml b/src/metadata.yaml
index c6928e7..d090609 100644
--- a/src/metadata.yaml
+++ b/src/metadata.yaml
@@ -10,8 +10,6 @@ series:
   - bionic
   - xenial
   - focal
-tags:
-  - monitoring
 subordinate: false
 provides:
   alertmanager-service: