Merge ~paride/curtin:remove-unused-imports into curtin:master

[Paride Legovini]

schema-validate-storage: remove unused imports

Fixes pyflakes failure:

  tools/schema-validate-storage:3: 'jsonschema' imported but unused
  tools/schema-validate-storage:4: 'json' imported but unused
  tools/schema-validate-storage:6: 'yaml' imported but unused

[Server Team CI bot (server-team-bot)]

PASSED: Continuous integration, rev:50baa4e4645627c3643c067f710689aacfc0b6e1
https://jenkins.ubuntu.com/server/job/curtin-ci/1212/
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review: Approve (continuous-integration)

[Ryan Harper (raharper)]

Thanks!

review: Approve

diff --git a/tools/schema-validate-storage b/tools/schema-validate-storage
index 1d55a57..f8550df 100755
--- a/tools/schema-validate-storage
+++ b/tools/schema-validate-storage
@@ -1,9 +1,6 @@
 #!/usr/bin/env python3
 
-import jsonschema
-import json
 import os
-import yaml
 import sys
 
 # Fix path so we can import helpers