Remove uyuni-build-keys dependency from susemanager rpm

[mbussolotto]

What does this PR change?

ERROR:

=========== Test SUSE-Manager-Server x86_64 ===========
can't install patterns-suma_server-4.3-150550.10.1.develHead.x86_64:
  package patterns-suma_server-4.3-150550.10.1.develHead.x86_64 requires susemanager-tools, but none of the providers can be installed
  nothing provides uyuni-build-keys needed by susemanager-tools-4.4.8-150550.6.1.develHead.x86_64

Remove uyuni-build-keys dependency from susemanager rpm (susemanager-build-keys already priovides it)

GUI diff

No difference.

• DONE

Documentation

• No documentation needed
• DONE

Test coverage

• No tests

• DONE

Links

• DONE

Changelogs

Make sure the changelogs entries you are adding are compliant with https://github.com/uyuni-project/uyuni/wiki/Contributing#changelogs and https://github.com/uyuni-project/uyuni/wiki/Contributing#uyuni-projectuyuni-repository

If you don't need a changelog check, please mark this checkbox:

• No changelog needed

If you uncheck the checkbox after the PR is created, you will need to re-run changelog_test (see below)

Re-run a test

If you need to re-run a test, please mark the related checkbox, it will be unchecked automatically once it has re-run:

• Re-run test "changelog_test"
• Re-run test "backend_unittests_pgsql"
• Re-run test "java_pgsql_tests"
• Re-run test "schema_migration_test_pgsql"
• Re-run test "susemanager_unittests"
• Re-run test "javascript_lint"
• Re-run test "spacecmd_unittests"