Remove unused static method

The only use of this method got removed already in commit bebae373

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Change-Id: I9757cbe34710efd9a9d31c74f81e01da40453ff9
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>