[MRESOLVER-373] Remove lock upgrading code

[jira-importer]

Tamas Cservenak opened MRESOLVER-373 and commented

The change done in MRESOLVER-346 in relation to DefaultArtifactResolver and DefaultMetadataResolver is wrong as it attempts lock upgrade. Also, is actually complemented by MRESOLVER-349 may not needed. The change happened for DefaultDeployer is correct.

Problem is that now the pair (DefaultArtifactResolver and DefaultMetadata resolver) in case of model building involving snapshot parent POM attempt lock upgrade (unintentionally).

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Issue Links:

• MNG-7819 Create IT that exercise file locking with snapshots
  ("fixes")

Remote Links:

• GitHub Pull Request #302
  
• GitHub Pull Request #303